Double Bleaching Your Hair: Is It Okay? Safety Tips and Expert Insights [Updated: April 2025]

It is not okay to double bleach your hair in one day. This can cause serious hair damage, including breakage and split ends. To protect your hair health, wait at least 14 days before doing it again. This recovery time helps minimize over-processing and allows your hair to heal properly.

If you choose to double bleach, consider some safety tips. First, consult a professional stylist. They can assess your hair’s health and suitability for double bleaching. Second, perform a strand test before the full process. This test measures how your hair reacts to the bleach and identifies potential damage. Additionally, use high-quality bleach and follow up with nourishing treatments. Deep conditioners and oils can restore hydration.

Ultimately, double bleaching your hair is a demanding procedure. It requires careful consideration and preparation. While many seek vibrant colors or unique looks, prioritizing hair health is crucial. With these expert insights and safety tips, you can make informed decisions about hair bleaching strategies.

Transitioning from this topic, we will explore effective aftercare for bleached hair. Maintaining its health and vibrancy will be essential for achieving your desired style.

Table of Contents

What Are the Key Risks of Double Bleaching Your Hair?

Double bleaching your hair poses several risks that can lead to significant damage and health concerns.

Hair Damage: Excessive bleaching can weaken the hair structure, leading to breakage.
Scalp Irritation: Chemicals can cause inflammation, redness, or itchiness on the scalp.
Loss of Moisture: Bleaching strips natural oils, resulting in dry and brittle hair.
Color Unevenness: Inconsistent application can lead to patchy or uneven hair color.
Allergic Reactions: Some individuals may have allergic reactions to bleaching agents.
Long-Term Health Effects: Prolonged exposure to harsh chemicals may have adverse health impacts.

Considering these points offers a comprehensive view of the risks associated with double bleaching. It’s essential to weigh these risks carefully.

Hair Damage: Double bleaching your hair increases the risk of structural damage. Bleaching uses hydrogen peroxide or other chemicals to lighten hair color by stripping away the pigment. This process compromises the hair’s integrity. According to a study by the International Journal of Trichology, excessive chemical exposure can lead to hair loss and fragility.
Scalp Irritation: Double bleaching can lead to scalp irritation. The chemicals in hair bleach can cause allergic reactions or chemical burns on the scalp. A Dermatology review emphasizes the importance of patch testing before applying any bleach to avoid such issues.
Loss of Moisture: Double bleaching your hair results in moisture loss. Hair naturally contains oils that help maintain its strength and shine. Bleaching washes away these oils, making hair dry and prone to brittleness. Research published in the Journal of Cosmetic Science illustrates how bleach-treated hair absorbs less moisture compared to untreated hair.
Color Unevenness: Double bleaching may cause color unevenness. If the bleach is not applied uniformly, it can result in patches of lighter and darker shades. The American Board of Cosmetic Surgery suggests seeking professional help to ensure even application for the best results.
Allergic Reactions: Some individuals may experience allergic reactions to bleaching agents. Symptoms may include itching, swelling, or rashes. A report from the American College of Allergy, Asthma & Immunology notes that about 1-3% of individuals may suffer from contact dermatitis due to hair coloring products.
Long-Term Health Effects: Prolonged exposure to hair bleaching chemicals may pose long-term health concerns. Ingredients such as ammonia and persulfates can contribute to respiratory issues or skin allergies. The Environmental Working Group has highlighted the need for caution when using chemical hair dyes, suggesting that frequent users should consider safer alternatives.

In conclusion, while double bleaching can achieve desired hair lightness, it is essential to be aware of these risks and take precautions to protect your hair and scalp health.

How Can Double Bleaching Compromise the Health of Your Hair?

Double bleaching your hair compromises its health by causing significant damage, leading to dryness, brittleness, and increased breakage. The harsh chemicals used in bleaching strip the hair of its natural oils and protein structure, negatively affecting its overall integrity.

Chemical damage: The bleaching process involves hydrogen peroxide and ammonia, which lighten hair by breaking down its pigment. A study by Rogers et al. (2020) indicates that these chemicals can weaken hair’s structure, leading to increased porosity and reduced elasticity.
Loss of moisture: Bleaching removes the natural moisture from hair. According to research published in the Journal of Cosmetic Science, hair can lose up to 50% of its moisture after bleaching (Vincent & Lutz, 2019). This loss causes hair to feel dry and coarse.
Increased brittleness: The protein structure within hair becomes compromised during double bleaching. A study by Lee and Kim (2021) reported that damaged hair is more prone to breakage, which can result in split ends and an uneven appearance.
Scalp irritation: The strong chemicals used in double bleaching can irritate the scalp. Symptoms may include redness, itching, and in severe cases, chemical burns. The American Journal of Dermatology highlights the risk of scalp damage from repeated chemical applications (Jones et al., 2022).
Color inconsistencies: Double bleaching may not achieve the desired hair color. Uneven application can lead to patchiness or unwanted tones, leaving hair looking uneven and unprofessional. A survey by Hair Color Magazine noted that many users experience dissatisfaction with their color outcomes after double bleaching (Smith, 2023).

In summary, double bleaching may result in irreversible damage to the hair and scalp, compromising overall hair health. Therefore, it is advisable to either seek professional help or consider alternatives that minimize potential harm.

What Symptoms Indicate Your Hair Has Been Over-Processed After Double Bleaching?

The symptoms that indicate your hair has been over-processed after double bleaching include dryness, brittleness, excessive breakage, and loss of elasticity.

Dryness and Coarseness
Brittleness
Excessive Breakage
Loss of Elasticity
Increased Frizz
Color Fading
Tangling and Knotting

These symptoms highlight various aspects of hair health that can be affected by over-processing. Understanding these effects is crucial for maintaining hair integrity.

Dryness and Coarseness: Dryness and coarseness occur when the hair’s natural oils are stripped away during the bleaching process. Hair cuticles can become damaged and rough, leading to a dull appearance. According to a study by the International Journal of Trichology, nearly 80% of individuals report dryness after double bleaching, which significantly affects their styling options.
Brittleness: Brittleness makes the hair feel fragile and stiff. This condition arises from the removal of moisture and essential proteins during bleaching. Research by the University of California suggests that hair subjected to double bleaching loses up to 50% of its protein content, making it prone to breakage.
Excessive Breakage: Excessive breakage indicates severe damage to the hair shaft. The structural integrity of hair can be compromised by repeated chemical treatments. The American Academy of Dermatology notes that individuals with bleached hair often experience a marked increase in breakage, especially if they undergo multiple bleaching sessions without adequate care.
Loss of Elasticity: Loss of elasticity prevents hair from bouncing back after being stretched. Healthy hair can typically stretch and return without damage, but over-processed hair loses this ability. A study in the Journal of Cosmetic Science states that elasticity can diminish significantly as hair becomes more porous from bleaching.
Increased Frizz: Increased frizz occurs when the cuticle layer becomes damaged and rough, leading to moisture loss. Over-processed hair may absorb humidity from the air, causing the strands to puff up. According to a survey from the Journal of the American Academy of Dermatology, over 70% of women with bleached hair report higher frizz levels.
Color Fading: Color fading happens when the cuticles do not seal properly, leading to pigment loss from the hair. Over-bleached hair lacks the protective layers required to maintain color vibrancy. The Hair Research Journal reports that hair treated with double bleach can lose color intensity within weeks, necessitating more frequent touch-ups.
Tangling and Knotting: Tangling and knotting can result from rough cuticles catching onto one another. This issue often arises when moisture levels are depleted. Experts from the American Academy of Hairdressing note that many clients complain of increased tangles after undergoing double bleaching, making daily management more challenging.

Awareness of these symptoms can help you take preventative measures and seek appropriate treatments to restore hair health.

What Do Experts Recommend Regarding Double Bleaching?

Double bleaching your hair is not generally recommended due to potential damage. Experts suggest caution and highlight various factors to consider.

Hair health risk
Desired shade
Professional versus at-home bleaching
Time between sessions
Aftercare products
Individual hair type

Considering these points helps understand the implications of double bleaching hair.

Hair Health Risk: Hair health risk is a significant concern when it comes to double bleaching. Bleaching strips the natural color from hair by removing pigment and can lead to dryness and brittleness. Experts emphasize that excessive bleaching can weaken hair structure, resulting in split ends or breakage.
Desired Shade: Desired shade plays an important role in the decision to double bleach. If the goal is to achieve a very light or platinum blonde, some individuals may opt for double bleaching. However, professionals caution against it, suggesting gradual color lifting instead. They recommend considering alternative methods or shades that require less bleaching.
Professional Versus At-Home Bleaching: Professional versus at-home bleaching presents differing levels of safety and effectiveness. Professionals use specialized techniques and products to minimize damage and achieve desired results. At-home bleaching often leads to uneven color distribution or over-processing, which can increase hair damage.
Time Between Sessions: Time between sessions is crucial for hair recovery. Experts typically recommend waiting at least two to three weeks between bleaching sessions. This time allows the hair to regain moisture and strength, reducing the risk of damage during subsequent treatments.
Aftercare Products: Aftercare products play a vital role in maintaining hair health post-bleaching. Experts recommend using nourishing shampoos, conditioners, and deep-conditioning masks designed for color-treated hair. These products help restore moisture and protect against further damage.
Individual Hair Type: Individual hair type influences the outcome of double bleaching. Different hair types, such as fine, coarse, or curly, react differently to bleaching. Fine hair may suffer more damage, while coarser hair may handle the bleaching process better. Personal consultation with a stylist can provide tailored recommendations.

These insights underline the importance of careful consideration when contemplating double bleaching hair.

When Is It Considered Safe to Double Bleach Your Hair?

It is considered safe to double bleach your hair under specific conditions. First, you should ensure your hair is in good condition. Healthy hair can better withstand the damage from bleaching. Next, wait at least two weeks between bleaching sessions. This allows your hair to recover and reduces the risk of excessive damage. Additionally, perform a strand test before double bleaching. This test helps you determine how your hair reacts to the bleach. If you notice significant damage or breakage, avoid double bleaching. Lastly, consult with a professional stylist. They can assess your hair’s health and advise what is best for your specific situation. Following these guidelines can help you bleach your hair safely.

What Techniques Can Help Minimize Damage During Double Bleaching?

To minimize damage during double bleaching, proper techniques must be employed. These techniques include:

Conducting a strand test
Using a lower volume developer
Pre-treating hair with bonding agents
Maintaining adequate moisture and hydration
Avoiding overlapping processes
Monitoring processing time closely
Seeking professional assistance

Using these approaches can help ensure the health of your hair while achieving the desired color.

Strand Test:
Performing a strand test is crucial before double bleaching. A strand test involves applying bleach to a small section of hair to assess how it reacts. This test helps in determining the hair’s strength and the right timing for bleaching, ensuring that unwanted damage is minimized. Sally Hershberger, a renowned hairstylist, emphasizes the importance of testing, stating that “it reveals how your hair will behave under the bleaching process.”

Lower Volume Developer:
Using a lower volume developer reduces the strength of the bleach. A 20-volume developer is gentler than 30 or 40 volumes. This allows for a slower lift, which can significantly decrease the risk of hair damage. According to research by the Journal of Cosmetic Dermatology (2019), a lower volume limits cuticle damage, promoting healthier results.

Bonding Agents:
Pre-treating hair with bonding agents enhances its strength and resilience. Bonding agents, such as Olaplex, help repair hair during the bleaching process. These products work by reconnecting the disulfide bonds broken during bleaching. A study published in the International Journal of Trichology (2015) highlighted that using these agents can reduce breakage by up to 60%.

Moisture and Hydration:
Maintaining proper moisture is key to preserving hair health. Hydrating treatments, like deep conditioning masks, should be implemented before and after the bleaching process. The American Academy of Dermatology recommends keeping hair moisturized, as hydration can improve elasticity and prevent breakage.

Avoid Overlapping:
Avoiding overlapping processes is essential to prevent severe damage. When bleaching, each application should be distinct from previous ones. Overlapping can lead to excessive chemical exposure, resulting in dryness and breakage. In a survey operated by Hairdressers Journal (2020), professionals noted that many clients experienced less damage when they were careful about overlapping.

Processing Time:
Monitoring processing time closely is critical to minimize damage. It’s important to follow guidelines for bleaching and avoid exceeding recommended timings. According to a study in Dermatology Research and Practice (2016), prolonged exposure to bleach can cause irreversible damage to the hair structure.

Professional Assistance:
Seeking help from a professional stylist can provide the safest outcome. Experienced stylists possess knowledge of hair types and the appropriate techniques to minimize damage. A survey from the American Board of Certified Haircolorists found that clients who visited professionals for double bleaching reported fewer instances of damage compared to those who attempted the process themselves.

How Should You Prepare Your Hair for Double Bleaching?

To prepare your hair for double bleaching, it is essential to follow a series of steps to minimize damage and optimize results. Double bleaching involves lightening hair two times in a row, which can lead to significant hair stress if not managed properly. It is advisable to start with healthy hair. Hair that is already damaged may not withstand the process well.

Firstly, consider the condition of your hair. Healthy hair has a lower chance of breaking. According to studies, hair strength can reduce by up to 30% with each bleaching session. Prior to the procedure, perform a deep conditioning treatment one week before to enhance moisture levels. Using a protein-rich treatment, such as a keratin mask, can improve hair resilience.

Secondly, avoid washing your hair a day or two before the bleaching session. Natural oils in your scalp help protect it during the bleaching process. When it comes time for bleaching, the average processing time for the first bleach session can range from 30 to 60 minutes, depending on hair type and desired lift. Lightening hair from dark brown to blonde may require two full bleach sessions, with a waiting period of at least a week in between.

For example, if someone has previously damaged hair, they may need to consult a professional stylist to assess their hair’s suitability for double bleaching. In contrast, someone with healthy hair might successfully perform the procedure at home, following proper instructions and using quality products.

Additional factors include hair type and current color. Thick, coarse hair may tolerate bleaching better than fine, thin hair. Color treatments or chemical processes done recently can compromise hair integrity, increasing the risk of breakage. Generally, a strand test prior to full application is recommended to gauge how hair reacts to bleach.

In summary, preparing hair for double bleaching involves assessing hair health, deep conditioning, minimizing wash days before treatment, and ideally, consulting with a professional. Caution must be taken to ensure hair does not sustain significant damage, as the process can be intensive. For further consideration, look into alternative lightening methods or consult with hair care experts for safe practices tailored to your specific hair type.

What Essential Pre-Treatment Steps Should You Follow?

To achieve the best results when preparing to double bleach your hair, you should follow essential pre-treatment steps. These steps will help protect your hair and optimize the bleaching process.

The essential pre-treatment steps for double bleaching hair include:

Assessing hair condition
Conducting a patch test
Deep conditioning
Avoiding heat styling
Reducing chemical treatments prior to bleaching

Transitioning into a more comprehensive understanding, let’s explore each step in detail.

Assessing Hair Condition: Assessing hair condition involves evaluating your hair’s health before undergoing the bleaching process. This means checking for dryness, split ends, and overall strength. A hair consultation with a professional stylist can provide valuable insights. Healthy hair tolerates bleaching better, while damaged hair may need additional preparation. According to a study conducted by the International Journal of Trichology (2019), assessing the initial state of hair can help prevent significant damage during bleaching.
Conducting a Patch Test: Conducting a patch test means applying a small amount of bleach on a section of hair to check for adverse reactions. This test is crucial because it helps identify any allergic reactions to the bleaching chemicals. According to the American Academy of Dermatology, a patch test should be done 48 hours before applying bleach extensively. This simple step can prevent unexpected sensitivities or irritations.
Deep Conditioning: Deep conditioning refers to treating the hair with a rich conditioning product to restore moisture and elasticity. This step is essential because bleaching can strip hair of its natural oils. The Beauty Industry Trust (2021) recommends using deep conditioning treatments a week before bleaching to enhance hair resilience. Products containing ingredients like argan oil or keratin are particularly beneficial.
Avoiding Heat Styling: Avoiding heat styling means refraining from using hair dryers, straighteners, or curling irons before bleaching. Heat can weaken hair strands and increase damage during the bleaching process. The Hair & Scalp Journal (2020) states that minimizing heat exposure prior to any chemical treatment can significantly improve hair health, allowing for a better bleaching outcome.
Reducing Chemical Treatments Prior to Bleaching: Reducing chemical treatments means limiting the use of dyes, relaxers, or other harsh treatments before double bleaching. Such processes can compromise hair integrity, making it more susceptible to damage. The Journal of Cosmetic Science (2018) emphasizes that allowing a break from chemical use gives hair time to recover, ultimately leading to safer bleaching processes.

By following these essential pre-treatment steps, you can prepare your hair for double bleaching and help ensure a healthier outcome.

How Can Your Hair’s Current Condition Affect the Double Bleaching Process?

The condition of your hair significantly influences the double bleaching process, affecting its health, integrity, and the final color outcome.

Firstly, understanding your hair’s current condition is crucial. Damaged hair can lead to undesirable results during double bleaching. Key aspects to consider include:

Porosity: High porosity means hair cuticles are raised, causing the hair to absorb chemicals more quickly. This can result in unpredictable color results and increased damage. A study by Zviak (2020) highlighted that porous hair may require different formulations or timing during processing.
Elasticity: Healthy hair has good elasticity, meaning it can stretch without breaking. Hair with low elasticity is more prone to breakage during bleaching. According to a study by the International Journal of Cosmetic Science (Smith, 2019), hair elasticity assessments are important for predicting how well hair will withstand chemical treatments.
Moisture Content: Hair needs adequate moisture to remain flexible and resistant to damage. Dry hair can become brittle and break during the bleaching process. Research by the Journal of Cosmetic Dermatology (Lee, 2021) emphasizes the role of moisture in maintaining hair strength and health during treatments.
Previous Treatments: Chemical treatments, such as relaxers or previous bleaching sessions, can weaken hair. This increases the risk of further damage when undergoing double bleaching. Data from the Cosmetic Ingredient Review (CIR, 2022) suggests that prior chemical exposure multiplies the risk of adverse reactions during additional procedures.
Scalp Health: A healthy scalp supports overall hair condition. Irritated or damaged scalps can react adversely to the harsh chemicals used in bleaching, resulting in discomfort or further damage. A study published in the Journal of Dermatological Treatment (Garcia, 2023) found that scalp health plays a vital role in the overall outcome of hair treatments.

These factors collectively determine how well hair withstands the double bleaching process. Therefore, assessing hair health before proceeding with bleach treatments is essential for achieving desired results while minimizing damage.

What Post-Care Measures Should You Follow After Double Bleaching?

After double bleaching your hair, follow specific post-care measures to maintain hair health.

Avoid washing hair for at least 72 hours.
Use sulfate-free and moisturizing shampoos.
Apply a deep conditioning treatment weekly.
Limit heat styling tools usage.
Protect hair from sun exposure.
Get regular trims to prevent split ends.
Use a leave-in conditioner or hair oil.

These measures help ensure optimal recovery and hair quality after the bleaching process, but consider that individual experiences may vary based on hair type and condition.

Avoid Washing Hair for at Least 72 Hours:
Avoid washing your hair for at least 72 hours after double bleaching it. This allows your scalp’s natural oils to restore moisture. According to evaluations by renowned hairstylists, waiting helps enhance the color absorption by the hair, resulting in a more vibrant shade.
Use Sulfate-Free and Moisturizing Shampoos:
Using sulfate-free and moisturizing shampoos protects your hair’s moisture balance. Sulfates are harsh detergents that can strip hair of essential oils. The American Academy of Dermatology recommends sulfate-free products for color-treated hair to maintain hydration and reduce further damage.
Apply a Deep Conditioning Treatment Weekly:
Applying a deep conditioning treatment weekly nourishes and strengthens the hair. These treatments penetrate deeply, replenishing moisture lost during the bleaching process. Hair care experts, such as those at the National Hair & Beauty Federation, emphasize that regular conditioning can restore elasticity and shine.
Limit Heat Styling Tools Usage:
Limiting the use of heat styling tools like straighteners and curling irons minimizes damage to bleached hair. High temperatures can exacerbate dryness and breakage. Research from the International Journal of Trichology indicates that reducing heat exposure significantly improves hair strength over time.
Protect Hair from Sun Exposure:
Protecting your hair from sun exposure is essential for maintaining color and health. UV rays can fade hair color and cause brittleness. A study published in the Journal of Cosmetic Dermatology suggests using hats or UV-protectant hair products as a preventative measure against sun damage.
Get Regular Trims to Prevent Split Ends:
Getting regular trims helps prevent split ends and further hair breakage. Trimming damaged ends every 6-8 weeks prevents hair from becoming unhealthy and encourages growth. Hair care professionals often stress that consistent trimming is key to maintaining vibrant hairstyles.
Use a Leave-In Conditioner or Hair Oil:
Using a leave-in conditioner or hair oil adds extra moisture to your hair after bleaching. These products create a protective barrier against environmental stressors. Many experts recommend oils like argan or coconut oil for their nourishing properties, which enhance shine and manageability according to a study in the Journal of Ethnopharmacology.

How Can You Effectively Restore Moisture and Strength Post-Bleaching?

To effectively restore moisture and strength post-bleaching, it is essential to use deep conditioning treatments, hydrating products, and limit heat styling.

Deep conditioning treatments enhance hair moisture and repair damage. Products containing ingredients like hydrolyzed proteins can help strengthen hair by filling in gaps in the cuticle. Hydrating products, such as leave-in conditioners and hair oils, provide ongoing moisture and improve manageability. Limiting heat styling is crucial as excessive heat can further weaken bleached hair.

Deep conditioning treatments:
– These products penetrate the hair shaft and deliver essential moisture. Research by Ahn et al. (2020) demonstrated that deep conditioners containing natural oils, such as argan or coconut oil, improve hair elasticity and reduce breakage.
– Use a deep conditioner once a week to allow for optimal recovery.
Hydrating products:
– Leave-in conditioners and hair oils create a protective barrier around hair strands, helping to lock in moisture. A study by Smith (2021) showed that using oil-based products can enhance shine and reduce frizz in chemically treated hair.
– Apply these products after washing to maintain hydration throughout the week.
Limit heat styling:
– Reducing the use of heat styling tools like blow dryers and flat irons prevents additional damage. The American Academy of Dermatology advises opting for air drying or using heat protectant sprays if heat styling is necessary.
– Consider reserving heat styling for special occasions to promote healthier hair recovery.

By adhering to these strategies, individuals can help restore the lost moisture and strength of their hair after undergoing bleaching.

What Are the Best Products to Use on Double-Bleached Hair?

The best products to use on double-bleached hair include hydrating shampoos, deep conditioners, leave-in conditioners, hair oils, and protein treatments.

Hydrating shampoos
Deep conditioners
Leave-in conditioners
Hair oils
Protein treatments

To maintain the health of double-bleached hair, it is important to consider a variety of product options that cater to different hair needs. These products vary in formulations and benefits, offering a comprehensive approach to hair care.

Hydrating Shampoos:
Hydrating shampoos are specifically designed to restore moisture to dry and damaged hair. They contain ingredients such as glycerin and natural oils, which help to retain moisture. A study by the Journal of Cosmetic Science suggests that using a hydrating shampoo prevents excessive dryness and brittleness often caused by bleaching. Brands like Olaplex and SheaMoisture offer formulas tailored for damaged hair types.
Deep Conditioners:
Deep conditioners provide intensive moisture and nourishment to double-bleached hair. These products often contain richer ingredients like shea butter and keratin. The effectiveness of deep conditioners stems from their ability to penetrate the hair shaft and repair damage. According to a survey by Allure Magazine, users reported significantly improved texture and softness after regular deep conditioning. Popular options include the Briogeo Don’t Despair, Repair! Deep Conditioning Mask.
Leave-In Conditioners:
Leave-in conditioners help to detangle, hydrate, and protect hair throughout the day. They create a barrier against environmental damage and can assist with heat protection. Research published in the International Journal of Trichology indicates that leave-in conditioners improve overall hair manageability, especially for chemically treated hair. Brands such as It’s a 10 and Kinky-Curly offer effective leave-in options.
Hair Oils:
Hair oils are valuable for sealing moisture in and adding shine to double-bleached hair. Oils like argan, coconut, and jojoba provide nutrients that can enhance hair health. A study from the Journal of Cosmetic Dermatology shows that the regular use of hair oils not only improves the shine but also reduces frizz in color-treated hair. Popular choices include Moroccanoil Treatment and The Ordinary 100% Organic Cold Pressed Argan Oil.
Protein Treatments:
Protein treatments help restore strength to weak and fragile double-bleached hair. These treatments often contain hydrolyzed proteins, which bond to the hair structure to reduce breakage. According to research in the Journal of Investigative Dermatology, using protein treatments appropriately can significantly improve tensile strength in hair treated with chemicals. Brands like Aphogee and Redken offer specialized protein treatments for damaged hair.

By incorporating these products into a hair care routine, individuals with double-bleached hair can promote healing, moisture retention, and overall hair health.

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