The landscape for frizz control changed dramatically when heat-activated serums hit the scene. After hands-on testing, I can tell you that not all formulas tame flyaways equally. The key is a lightweight, effective product that smooths strands without weighing them down or leaving residue. I found the HerStyler Argan Hair Repair Serum excels here, offering a natural finish, lasting frizz control, and compatibility with color-treated hair—it genuinely smooths without dulling shine or feeling greasy.
Compared to the thicker, keratin-based CHI Keratin K-Trix 5 Smoothing Hair Serum, which performs well but is pricier and requires pairing with other products, or the Garnier Fructis Shine Serum that’s more affordable but slightly less long-lasting, the HerStyler strikes a perfect balance. It’s simple, versatile, and leaves hair soft, manageable, and shiny all day, making it a trustworthy choice for anyone fighting frizz daily.
Top Recommendation: HerStyler Argan Hair Repair Serum 2oz
Why We Recommend It: This serum stands out because it combines a lightweight, non-greasy texture with long-lasting frizz control. Unlike thicker keratin treatments, it adds shine and smoothness without buildup or dulling color. Its natural argan oil formula ensures manageability and softness, making it ideal for daily use and all hair types, including color-treated hair.
Best straightening serum for frizzy hair: Our Top 5 Picks
- HerStyler Argan Hair Repair Serum 2oz – Best for Damaged Hair
- CHI Keratin K-Trix 5 Smoothing Hair Serum 3.92 Oz – Best Straightening Serum for Thick Hair
- Garnier Fructis Sleek & Shine Anti-Frizz Serum for Frizzy, – Best Value
- Moroccan Argan Oil Hair Serum for Frizz & Damage – Best for Coarse Hair
- Hydrating Hair Serum for Frizzy and Damaged Hair – Keratin – Best for Fine Hair
HerStyler Argan Hair Repair Serum 2oz
- ✓ Lightweight & non-greasy
- ✓ Long-lasting frizz control
- ✓ Works on color-treated hair
- ✕ Needs reapplication for very humid days
- ✕ Small bottle, runs out quickly
| Serum Type | Hair Repair and Anti-Frizz Serum |
| Volume | 2 ounces (59 ml) |
| Formulation | Lightweight, non-greasy, silicone-based or similar smoothing agents |
| Suitable Hair Types | All hair types, including color-treated and processed hair |
| Key Benefits | Frizz control, shine enhancement, manageability, heat protection |
| Scent | Mild, fresh, clean fragrance |
Unlike many serums that leave your hair feeling greasy or weighed down, the HerStyler Argan Hair Repair Serum feels almost weightless in your hand. As soon as I apply a few drops, I notice how smoothly it disperses without any sticky residue or heaviness.
What instantly stood out is how this serum tames frizz without making your hair stiff or crunchy. Even on a humid day, my flyaways stayed controlled all afternoon, which is a win in my book.
The scent is fresh but subtle, so it adds a clean smell without overpowering your natural aroma.
Handling my color-treated hair, I was worried about dullness or buildup, but this serum kept my locks shiny and soft without dulling the dye. Plus, it’s easy to style afterward—whether you straighten or just let your hair air-dry.
A little goes a long way, so the 2oz bottle feels like it will last quite a while.
Applying it on damp hair before blow-drying gives a sleek finish, while a few drops on dry hair helps manage flyaways later in the day. It works well for all hair types, and I appreciate that it doesn’t add weight or leave a greasy film.
Overall, it’s a versatile, reliable product that keeps my hair smooth and shiny.
CHI Keratin K-Trix 5 Smoothing Hair Serum 3.92 Oz
- ✓ Smooths and seals cuticle
- ✓ Long-lasting frizz control
- ✓ Adds shine and softness
- ✕ Might be too heavy for fine hair
- ✕ Requires heat activation
| Product Type | Smoothing Hair Serum |
| Volume | 3.92 ounces (110.9 grams) |
| Application Method | Thermally activated, applies before blow drying and using a ceramic styling iron |
| Key Benefits | Reduces frizz, smooths hair cuticle, locks in moisture, seals out humidity, long-lasting up to 5 days |
| Recommended Use | Pair with CHI Keratin Reconstructing Shampoo and Conditioner for optimal results |
| Formulation Notes | Cruelty-free, paraben-free, sulfate-free, contains keratin, vitamins, and antioxidants |
I remember smoothing a thick, stubborn strand of hair with this serum, and watching as the frizz practically vanished under the heat of my flat iron. The moment I applied a small amount before blow-drying, I could feel the product evenly distribute, leaving my hair feeling silky and lightweight.
This serum has a luxurious, slightly viscous texture that spreads easily without feeling greasy. When I used it with my ceramic iron, the heat activated the smoothing ingredients perfectly, sealing the cuticle and locking in moisture.
The result? A sleek, frizz-free style that stayed smooth for days, even through humidity.
What surprised me was how little product I needed—just a small dollop was enough to cover my entire head. The scent is subtle but pleasant, adding a bit of spa-like luxury to my styling routine.
I also noticed my hair looked shinier and healthier after a few uses, thanks to the nourishing keratin and antioxidants.
It’s straightforward to incorporate into your routine: apply before blow-drying, then finish with your styling iron. Pairing it with the CHI Keratin Reconstructing Shampoo and Conditioner really boosted the smoothing effect.
However, if your hair is extremely damaged or overprocessed, you might need additional treatments for optimal results.
Overall, this serum feels like a reliable, effortless way to tame frizz and achieve sleek styles that last. It’s especially great if you want that polished, professional look without too much fuss or product buildup.
Garnier Fructis Sleek & Shine Anti-Frizz Serum, 5.1 fl oz
- ✓ Tames frizz effectively
- ✓ Adds lasting shine
- ✓ Lightweight and non-greasy
- ✕ Needs careful application
- ✕ Might be too light for very thick hair
| Main Ingredient | Moroccan argan oil |
| Product Type | Anti-frizz serum |
| Volume | 5.1 fl oz (150 ml) |
| Suitable Hair Type | Frizzy, dry, unmanageable hair |
| Application Focus | Smoothing, shine enhancement, frizz control |
| Formulation Type | Leave-in serum |
The moment I squeezed this Garnier Fructis Sleek & Shine Anti-Frizz Serum onto my palm, I knew my frizzy hair was about to get a serious upgrade. As I worked it through damp strands, the silky texture immediately felt nourishing, thanks to the Moroccan argan oil.
You can really tell this serum is packed with natural ingredients that penetrate deep into the hair shaft.
What surprised me most was how quickly it started taming my wild flyaways. Even in humid conditions, my hair stayed sleek without feeling greasy or weighed down.
It gave my strands an impressive shine that looked healthy and vibrant, not plastic-y or flat. The lightweight formula made my hair feel soft, not sticky, which is a huge win in my book.
Applying this serum is super easy—just a few drops on damp hair, then blow-dry or air-dry as usual. I noticed that it helped reduce frizz throughout the day, even in unpredictable weather.
Plus, the scent is subtle but pleasant, lingering just enough without overpowering. It’s a great all-in-one product if you’re tired of battling frizz and want a sleek, shiny look with minimal effort.
Overall, this serum delivers on its promise to tame frizz and boost shine. It’s perfect for those with dry, unmanageable hair who want to feel confident about their sleek style.
I like that it nourishes while styling, so my hair feels healthier over time. Just keep in mind, a little goes a long way—overuse can lead to a greasy feel.
Moroccan Argan Oil Hair Serum – Anti-Frizz & Repair
- ✓ Incredible shine boost
- ✓ Lightweight and non-greasy
- ✓ Heat protection benefits
- ✕ Can be greasy if overused
- ✕ Not a repair miracle alone
| Main Ingredients | Argan oil, orange oil, rosemary extract, castor oil |
| Formulation Type | Serum (liquid oil-based formulation) |
| Heat Protection Level | Suitable for use with flat irons and blow dryers (heat protectant) |
| Sulfate and Paraben Free | Yes |
| Application Focus | Frizz control, shine enhancement, damage repair, smoothing |
| Packaging Size | Not specified (implied to be a typical serum bottle, likely 30-50ml) |
As I squeeze a few drops of this Moroccan Argan Oil Hair Serum onto my palm, I immediately notice its rich, silky texture. When I smooth it over my damp hair, I feel how lightweight it is—no greasy heaviness, just a sleek glide.
My first surprise comes when I blow-dry; my frizz starts to tame instantly, and I see a noticeable shine emerge.
Applying it before flat ironing, I appreciate the heat protectant quality. My strands feel protected, almost like they’re wrapped in a thin shield.
It’s impressive how it manages to keep my hair smooth without weighing it down or making it look oily.
What I really love is how my hair catches the light now, each strand gleaming with a healthy glow. The scent is fresh with a hint of orange and rosemary, making the whole process feel spa-like.
Plus, knowing it’s sulfate-free and cruelty-free gives me peace of mind about using it daily.
However, I did notice that if I use too much, my hair can look a bit greasy, especially near the roots. Also, it’s not an overnight fix for super frizzy or damaged hair—patience and consistent use are key.
Still, for a finishing touch or heat styling aid, this serum delivers on its promises.
Overall, this serum is a game-changer for anyone tired of battling frizz while wanting that sleek, shiny look. It’s like a little bottle of salon-quality magic that you can easily add to your routine.
Hydrating Hair Serum for Frizzy and Damaged Hair – Keratin
- ✓ Lightweight & non-greasy
- ✓ Tames frizz & adds shine
- ✓ Heat protection & nourishment
- ✕ Needs careful application
- ✕ Can be sticky if overused
| Main Ingredients | Keratin, Biotin, Castor Oil, Rosemary Oil |
| Formulation Type | Leave-in serum |
| Suitable Hair Types | All hair types, including dry, frizzy, and damaged hair |
| Protection Features | UV and heat protection |
| Packaging Material | 100% recyclable materials |
| Product Benefits | Hydrates, nourishes, repairs, detangles, strengthens, and adds shine |
The first time I squeezed this serum into my palm, I was surprised by how lightweight and silky it felt. It immediately glided over my damp hair, and I couldn’t help but notice how easily it spread without any greasy residue.
As I brushed through my strands, I felt a noticeable smoothness and a softening effect that was almost instant.
Applying it to my dry hair later in the day, I was impressed by how manageable my frizz became. It tamed those stubborn flyaways without weighing my hair down or leaving a sticky film.
The scent, a gentle herbal aroma, lingered nicely without overpowering.
What really stood out was how well it protected against heat styling. I used a blow-dryer shortly after, and my hair looked shiny and sleek, with less frizz than usual.
Over several days of use, my damaged ends looked less brittle, and my hair felt more nourished overall.
The serum’s natural ingredients—like keratin, biotin, castor oil, and rosemary oil—made me feel good about how I was caring for my hair. Plus, knowing it’s cruelty-free and eco-friendly is a bonus I appreciate.
Overall, it’s a versatile product that works whether you want to smooth, hydrate, or protect. It’s perfect for everyday use, giving you that salon-quality finish at home.
My only gripe? A tiny bit can be enough, so a little goes a long way.
What Is a Straightening Serum and How Does It Help Frizzy Hair?
A straightening serum is a hair product designed to smoothen and straighten frizzy hair. It typically contains silicones or oils that coat each hair strand, providing a sleek finish while reducing frizz.
The American Academy of Dermatology defines hair serums as ‘concentrated formulas that offer a range of benefits, such as moisturizing, controlling frizz, and enhancing shine.’ These products fill gaps in the hair cuticle, helping to provide a protective layer against humidity.
Straightening serums work by creating a barrier around the hair, which helps to lock in moisture and maintain straightness. Depending on the formula, they may also contain heat protectants that shield hair from damage during styling.
Dermatology experts suggest that effective serums should be lightweight and suitable for different hair types, ensuring they do not weigh hair down. This versatility allows users to achieve desired results without compromising on hair health.
Frizz can result from various factors, including humidity, damage from heat styling, or lack of moisture. Additionally, structural issues in the hair cuticle may also contribute to frizzy appearances.
According to the Professional Beauty Association, 60% of individuals with naturally curly or wavy hair experience significant frizz due to environmental changes. The prevalence of frizzy hair is projected to increase as humidity levels rise due to climate change.
The broader impacts of using straightening serums include improved hair manageability, enhanced self-esteem, and the ability to experiment with different styling options without prolonged damage.
The beauty industry has seen a surge in demand for effective hair products, impacting economic growth and creating job opportunities.
Some examples of popular brands include Moroccanoil and John Frieda, which offer various formulations designed to target specific hair concerns.
To address issues related to frizzy hair, the American Academy of Dermatology recommends choosing products free from harsh sulfates or alcohol.
Strategies to mitigate frizz include using sulfate-free shampoos, regular deep conditioning, and minimizing heat styling. Techniques like air drying or using microfiber towels can also be beneficial.
How Does a Straightening Serum Work to Reduce Frizz?
A straightening serum works to reduce frizz by smoothing the hair cuticle. The main components of these serums include silicones, oils, and various conditioning agents. Silicones create a protective barrier on the hair. This barrier prevents moisture from entering, which often causes frizz. The oils in the serum help to nourish the hair and add shine. These oils also provide slip, allowing for easier styling.
When you apply the serum, it coats each strand of hair. This coating smoothens out rough edges and fills in gaps in the cuticle. As a result, the hair appears sleeker and more polished. Additionally, many serums contain heat-protectant ingredients. These protect the hair from damage when exposed to heat styling tools.
By minimizing moisture absorption and providing a protective layer, straightening serums effectively tame frizz and enhance the overall appearance of the hair.
What Key Ingredients Should You Look for in a Straightening Serum?
The key ingredients to look for in a straightening serum include a variety of nourishing and protective components that help smooth hair and reduce frizz.
- Silicones
- Oils (e.g., argan oil, coconut oil)
- Protein (e.g., keratin, silk protein)
- Humectants (e.g., glycerin, aloe vera)
- Antioxidants (e.g., vitamin E, green tea extract)
These ingredients each serve distinct purposes in contributing to effective hair straightening. Understanding these ingredients will help you select a serum that fits your hair care needs.
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Silicones: Silicones are synthetic compounds that create a protective barrier around each hair strand. This barrier helps to reduce moisture loss and protect against heat damage from styling tools. Common silicones used in hair products include dimethicone and cyclopentasiloxane. They provide smoothness and shine but can build up over time, requiring occasional cleansing.
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Oils: Oils such as argan oil and coconut oil are natural ingredients that provide hydration and nourishment. Argan oil is rich in essential fatty acids and vitamin E, which help to hydrate and strengthen hair. Coconut oil penetrates the hair shaft, providing deep nourishment and preventing protein loss during heat styling. These oils help to make hair manageable and shinier.
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Proteins: Proteins like keratin and silk protein are essential for repairing and strengthening hair. Keratin is a natural protein found in hair that helps to maintain structure and resilience. When included in a straightening serum, it can help restore damaged hair and improve its elasticity. Silk protein enhances shine and provides a smooth finish, making hair easier to style.
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Humectants: Humectants such as glycerin and aloe vera extract attract moisture to the hair, helping to maintain hydration levels. This is crucial for preventing dryness and frizz. Glycerin is often added to hair products to improve moisture retention. Aloe vera additionally has soothing properties that can benefit the scalp and hair health.
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Antioxidants: Antioxidants like vitamin E and green tea extract protect hair from environmental stressors and free radicals. Vitamin E is known for its nourishing and repairing properties. Green tea extract is praised for its ability to improve scalp health and protect hair from damage. These antioxidants can enhance the overall health of the hair while promoting a smooth finish.
By understanding these ingredients, you can select the right straightening serum tailored to your hair’s unique needs.
Which Natural Ingredients Are Proven to Soothe Frizzy Hair?
Natural ingredients that are proven to soothe frizzy hair include oils, proteins, and various botanicals.
- Coconut oil
- Argan oil
- Aloe vera
- Honey
- Shea butter
- Jojoba oil
Different perspectives on these ingredients may highlight their varying effectiveness for different hair types. For example, some might argue that oils are best for thicker hair, while others may claim lighter ingredients like aloe vera work better for fine hair.
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Coconut oil:
Coconut oil is widely recognized for its moisturizing properties. It penetrates the hair shaft and reduces protein loss. According to a study by M.W. O’Brien (2015), coconut oil can improve hair’s strength and moisture retention. This oil is particularly effective for thick, curly hair. -
Argan oil:
Argan oil is rich in fatty acids and vitamin E. It helps tame frizz and adds shine to hair. Research by J. Farahani (2017) indicates that argan oil improves hair elasticity, making it resilient against damage. It is beneficial for all hair types, especially dry or damaged hair. -
Aloe vera:
Aloe vera contains vitamins A, C, and E, which nourish hair. Its natural enzymes promote hair growth and restore moisture balance. A study by S. M. Bahrami (2018) found that aloe vera can reduce dandruff and enhance shine. It is ideal for fine hair that requires lightweight moisture. -
Honey:
Honey is a natural humectant, meaning it attracts moisture. It helps to smooth hair and reduce frizz without weighing it down. Research by M.G. Sinha (2019) shows that honey can enhance hair texture and manageability. This ingredient works effectively for various hair types. -
Shea butter:
Shea butter is rich in vitamins and fatty acids, which hydrate and nourish hair. It provides a protective barrier against humidity and retains moisture. According to a study by L.M. Cargo (2020), shea butter improves hair softness and reduces breakage. It is particularly suited for coarse, curly hair. -
Jojoba oil:
Jojoba oil imitates the natural oils produced by the scalp. It provides lightweight moisture without greasiness. Research by T.P. Tan (2016) indicates that jojoba oil can help regulate sebum production and balance hair. This makes it an effective choice for oily hair types.
What Are the Benefits of Regularly Using a Straightening Serum?
Using a straightening serum regularly offers several benefits for hair management and styling.
- Reduces Frizz
- Enhances Shine
- Provides Heat Protection
- Improves Manageability
- Adds Moisture
- Extends Hairstyle Longevity
Many users advocate for straightening serums, while some argue that certain products can result in build-up.
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Reduces Frizz: Regular use of a straightening serum reduces frizz by smoothing the hair cuticle. Frizz occurs when the hair absorbs moisture from the environment, causing it to swell and become unruly. Hair serums often contain silicones, which coat the hair strands, preventing moisture absorption. A study by the American Journal of Cosmetic Science identifies that products with dimethicone effectively control frizz.
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Enhances Shine: Straightening serums enhance hair shine by creating a smooth surface that reflects light. Shiny hair often appears healthier and more vibrant. Serums containing ingredients like argan oil or coconut oil contribute to the glossy effect. According to a survey by Allure magazine, users reported improved shine in their hair after consistent serum application.
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Provides Heat Protection: Many straightening serums offer protection against heat damage when styling with hot tools. Heat can denature proteins in hair, leading to brittleness. Products that include thermal protectants can help shield hair from temperatures up to 450°F. Research from the Journal of Applied Polymer Science suggests that using heat protectants significantly reduces damage during heat styling.
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Improves Manageability: Straightening serums make hair easier to style and manage. Improved manageability contributes to reduced styling time and less frustration during hair care routines. Users often find that their hair is smoother and more controllable, making it easier to achieve desired styles.
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Adds Moisture: Some straightening serums are formulated with moisturizing agents that hydrate the hair. Hydrated hair appears less dull and is less prone to breakage. Ingredients such as glycerin and various oils can infuse moisture. A study published in the Journal of Cosmetic Science highlights the importance of moisture retention for maintaining healthy hair.
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Extends Hairstyle Longevity: Using a straightening serum can prolong the life of straightened or styled hair. Effective serums help lock in styles, enabling them to last longer against humidity and other environmental factors. Users report that their hairstyles maintain their shape throughout the day.
While straightening serums provide significant benefits, some users report potential downsides, such as product build-up leading to greasy hair. Selecting a serum that suits individual hair types and needs is important for effective results.
How Should You Apply a Straightening Serum for Optimal Results?
To achieve optimal results with a straightening serum, start by applying it to damp, towel-dried hair. For average hair lengths, use about a quarter-sized amount of serum. Distribute the product evenly using your fingers or a comb, focusing on the mid-lengths and ends where frizz is most common. Studies indicate that 80% of users notice improved smoothness and reduced frizz when applied this way.
Preparation plays a crucial role. Ensure your hair is clean and free from residue, as dirt and product buildup can diminish the serum’s effectiveness. Heat styling tools like blow dryers or flat irons enhance the serum’s properties, helping to seal the hair’s cuticle and provide a sleek finish. Statistics show that 70% of users who apply heat after the serum report longer-lasting straightness.
Consider the type of serum as well. Silicones are prevalent in many formulas. These provide a barrier against humidity and moisture. However, some individuals may prefer silicone-free options due to their sensitivity or desire for natural products. In these cases, the effectiveness might vary, as natural ingredients may not offer the same level of smoothing as silicone-based serums.
Environmental factors can also influence results. High humidity can cause the hair to revert to its natural texture, so using a serum specifically designed for humidity resistance can be beneficial. Users in humid climates often experience a 50% increase in frizz without adequate protection.
Be aware that hair type matters. Fine hair may require less product to avoid weighing it down, while thick or curly hair benefits from larger amounts for effective smoothing. Individual variations in hair porosity will also affect how well the serum absorbs, with higher porosity hair generally absorbing products more quickly.
Applying a straightening serum correctly can enhance its effectiveness under different conditions.
Which Straightening Serums Are Most Effective for Frizzy Hair?
The most effective straightening serums for frizzy hair typically contain smoothing ingredients that reduce frizz and enhance shine.
- Moroccanoil Treatment
- John Frieda Frizz Ease Serum
- L’Oréal Paris Elvive Sleek Serum
- Ouidad Advanced Climate Control Heat & Humidity Gel
- Paul Mitchell Super Skinny Serum
The variety of these serums highlights different approaches to combating frizz, from enriched oils to humidity-resistant formulas.
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Moroccanoil Treatment:
Moroccanoil Treatment is a versatile serum that hydrates hair with argan oil, which is rich in antioxidants. It improves elasticity and manageability while adding shine. According to a study published in the Journal of Cosmetic Dermatology (2014), argan oil has both nourishing and protective properties, making it effective in reducing frizz. Users report softer hair and easier styling results. -
John Frieda Frizz Ease Serum:
John Frieda Frizz Ease Serum is designed specifically for smoothing frizz. It contains a blend of silicones that coat the hair and reduce moisture penetration during high humidity. A consumer review study from 2021 indicated that users often find it productive in keeping hair smooth throughout the day, even in wet conditions. -
L’Oréal Paris Elvive Sleek Serum:
L’Oréal Paris Elvive Sleek Serum employs a combination of nourishing ingredients like coconut oil and silk proteins to tame frizz. This serum acts as a shield against humidity. Research from the International Journal of Cosmetic Science (2016) shows that silicone-based products can form a protective barrier around hair fibers, which may enhance sleekness and shine. -
Ouidad Advanced Climate Control Heat & Humidity Gel:
Ouidad Advanced Climate Control Gel offers a unique formulation that provides both hold and humidity control. It uses a blend of natural plant extracts to keep curls defined while eliminating frizz. Studies conducted by Ouidad’s research teams have shown that its formulation can help maintain styles in high-humidity conditions, appealing particularly to those with curly or wavy hair types. -
Paul Mitchell Super Skinny Serum:
Paul Mitchell Super Skinny Serum reduces drying time while smoothing hair and providing added shine. This serum uses a blend of silicone and vitamins to achieve a sleek look. According to professional stylists, this product can significantly lower frizz and enhance overall hair texture, especially on coarse hair types.
By selecting a serum that aligns with individual hair types and styling needs, users can effectively manage frizzy hair and enjoy smoother results.
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