9 Best & Proven Serums For Hair Straightening In 2024

Medically reviewedby Dr. Amy Revene M.B.B.S.
WrittenbyLuat Duong
Last updated

Are you on the hunt for the ultimate product to achieve glossy, poker-straight hair? Your search ends here with our expertly curated list of the top 9 best serums for hair in 2024.

This definitive guide features serums designed to help transform frizzy, unmanageable locks into more manageable silky, sleek-looking tresses – a great addition to any hair care regimen.

From serums formulated for specific hair types to products combating frizz, dryness, and damage, we've got you covered.

Each hair straightening serum featured here uses innovative formulations to offer noticeable improvements in hair texture.

Don't let the fight against unruly hair get you down - discover the hair straightening serum that's right for you, and upgrade your hair game today.

Dive into our guide to explore the best hair straightening serums making waves in the beauty industry this 2024.

Get ready to welcome the perfect harmony of manageability, protection, and dazzling shine in your hair care routine.[[textbox]]


Finding the right hair straightening serum can be a game-changer, transforming curly and unruly hair into straight and smooth hair.

This guide has provided an in-depth look at 9 of the best hair straightening serums available in 2024. 

With options to cater to different hair types and concerns, you are now equipped with the knowledge to make a well-informed choice, if you want to keep your hair healthy. 

With the right hair serum, you may find it easier to manage frizz and achieve a sleeker look.

Remember, the best serum for you depends on your specific hair type, needs, and goals. Select one serum at your earliest, and embrace the journey towards glossy, straight hair. 


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Can hair serum make hair straight?

best serum for hair straightening

Yes, hair serums can indeed help make hair straight. They typically contain silicones and other soothing ingredients that coat the hair shaft, reduce frizz, and give hair a smoother, straighter appearance. However, it's important to note that while serums can enhance straightness, they don't permanently alter the structure of your hair.

Hair serums are designed to provide a protective layer over your hair cuticles. This makes your strands sleeker and easier to manage, aiding in the straightening process.

When used in combination with a straightening tool like a flat iron or a hair dryer, hair serums can amplify the straightening effect, leaving your hair looking straighter for longer.

However, the effectiveness of hair serum in straightening your hair depends on several factors, including your hair type, the specific product used, and the method of application.

For instance, if you have extremely curly or oily hair, a serum alone might not give you the straight, sleek look you're aiming for. 

But when used alongside heat styling tools and other hair straightening products, it can certainly help in reducing frizz, adding shine, and making your hair more manageable, ultimately contributing to a straighter appearance.

Read this: 15 Best Hair Growth Serums for Superior Hair Growth (2024)

9 Best hair straightening serums in 2024

1. SheaMoisture Hydration Finishing Oil Serum

hair growth serum

SheaMoisture's nourishing hair serum is specifically designed to nourish and protect curly, African American hair types.

The core ingredients are coconut oil, shea butter, Acacia Senegal, and coconut milk, which together reduce frizz and smooth curls, giving your hair a straightened look.

Impressively, this serum avoids harmful chemicals like petrolatum, drying alcohol, parabens, and phthalates, ensuring it doesn't weigh down your tresses. 

If you're looking for a product that prioritizes hair health while delivering straightening benefits, this serum is worth considering.

For best results, use a blowdryer after applying the hair straightening serum to help the product better penetrate the hair strands and ensure a long-lasting straight effect.

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2. OGX Smoothing + Liquid Pearl Luminescent Serum

hair texture

OGX's luminescent serum is a budget-friendly option that doesn't compromise on quality. The unique formula incorporates sea kelp extracts to protect your hair and pearl extracts to give it a brilliant shine.

Additional ingredients like glycerin, hyaluronic acid, and vegetable protein help moisturize and smooth your strands. 

If you desire salon-quality, silky hair without breaking the bank, this serum could be your go-to product.

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3. Vitamins Hair Serum Keratin Treatment

hair routine

The Vitamins Hair Serum Keratin Treatment is a boon for all hair textures, particularly those grappling with the persistent problem of frizz.

Whether you're dealing with thin, fine hair or managing extra thick tresses, this serum tames and eases frizz effectively, and checks flyaways.

One standout feature of this serum is its anti-humidity smoothing softener, perfect for ensuring a glossy finish.

Furthermore, it's a boon for colored, dry, or damaged hair, thanks to its protein repair capabilities.

For salon-like soft, shiny hair, this serum could be your perfect match. It helps maintain a straight, smooth look even in challenging conditions.

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4. John Frieda Frizz Ease All-in-1 Extra Strength Serum

hair serum for straight hair

Designed specifically for thick, coarse hair, the John Frieda Frizz Ease All-in-1 Extra Strength Serum stands out with its flexible application process - you can apply it on either wet or dry hair.

It guarantees 72-hour frizz protection and resists up to 90% humidity. This serum also provides heat protection up to 220°C, keeping your hair safe during straightening processes.

For those with color-treated hair, this vegan-friendly formula is safe and won't compromise your hue.

If humidity resistance, heat protection, and extended frizz protection are your priorities, this serum is worth considering.

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5. The Body Shop Grapeseed Glossing Serum 

best hair serum

This serum is an excellent choice if you're seeking added shine and gloss for your hair. It's formulated with grape seed oil and sesame seed oil, known for their nourishing properties and ability to combat frizz.

This product stands out for its performance even in humid conditions, making it an ideal product for maintaining straight hair. 

Silicones in the formulation give hair an extra glass-like sheen, and while silicones can cause build-up, this serum is easy to wash off.

Using a clarifying shampoo once a week can further prevent any product build-up. If glossy, frizz-free straight hair is your goal, this product is worth considering.

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6. Paul Mitchell Super Skinny Serum

hair serum

Paul Mitchell's Super Skinny Serum works wonders for unruly and frizzy hair, taming it into smooth, silky, and manageable strands.

Its unique formulation not only conditions and adds shine but also reduces drying time, a feature much appreciated by those on the go.

For a hassle-free styling process and a sleek finish, this serum could be your ideal match.

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7. It's a 10 Haircare Miracle Leave-In Plus Keratin

leave in hair serum

It's a 10 Haircare's Miracle Leave-In Plus Keratin is a versatile product that nourishes, strengthens, and straightens hair.

Its enriching keratin formula is designed to not only help straighten your hair but also improve its appearance.

This product is an all-rounder, providing benefits that go beyond just straightening.

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8. CHI Silk Infusion Leave-in Serum

hair straightening serum

The CHI Silk Infusion Leave-in Serum is a versatile, alcohol-free reconstructing treatment suitable for all hair types.

This serum goes a step further than just straightening; it penetrates your hair strands to strengthen them from within, resulting in an impressive softness, manageability, and shine without any buildup.

Another notable aspect of this serum is that it protects your hair from the damage of thermal styling and environmental stressors, all while being safe for colored hair. It's also free of parabens and gluten.

If you're searching for a serum that gives straight hair while also improving hair health, this CHI Silk Infusion Leave-in Serum should be on your shortlist.

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9. TRESemmé Keratin Smooth Heat Activated Treatment

hair serum for hair straightening

TRESemmé's Keratin Smooth Heat Activated Treatment is a well-loved product known for its dual-action formula.

This treatment not only helps in straightening your hair but also provides protection against heat damage. You can apply it on wet or dry hair. 

The formula is infused with keratin, which works to smooth frizz and flyaways while sealing in shine for a salon-quality finish.

The beauty of this treatment is its heat-activated property. When you apply heat to your hair during the styling process, it further enhances the smoothing and straightening effects of the serum.

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Holistic hair care with hair straightening

best hair serum

While choosing the right hair straightening serum is essential to achieve a sleek, smooth look, it's equally important to pay attention to overall hair health.

Straightening hair, especially through heat or chemical processes, can sometimes lead to hair damage, dryness, or even hair loss.

Therefore, using a hair care product designed to enhance hair health and reduce hair loss can be a beneficial addition to your hair care routine.

One such product worth considering is the Bio-Pilixin Activation Serum.

Bio-Pilixin Activation Serum is an innovative hair care product that has been well-received in the hair industry.

This advanced serum is thoughtfully formulated not only to help curb hair loss but also to promote new hair growth, providing a comprehensive approach to hair health for both men and women.

Among its key ingredients, Capilia Longa, a nutrient-dense derivative from Curcuma longa stem cells, has shown promising results in substantially reducing hair loss and improving hair density.

The serum is also enriched with Niacinamide, enhancing healthy scalp blood flow and safeguarding hair follicles from environmental damage, and Vanillyl Butyl Ether, a mild warming agent that boosts nutrient and oxygen supply to hair follicles.

Supported by a clinical trial, 93% of participants observed a reduction in hair loss, and 73% noticed an increase in hair density after 150 days of use, indicating the potential effectiveness of Bio-Pilixin Serum.

What's more, the product comes with a 150-day money-back guarantee, underscoring the brand's confidence in its science-powered solution for healthier, fuller hair.

Incorporating Bio-Pilixin Activation Serum into your hair care regimen while using hair straightening serums can help you maintain healthier, stronger hair that's not just smooth and straight but also vibrant and full of life.

Bio-Pilixin® Activation Serum | For Women
Bio-Pilixin® Activation Serum | For Women
Drug-free & clinically tested

How to choose the best hair straightening serum for your hair

Choosing the ideal hair straightening serum involves understanding your hair type, identifying its needs, and considering the product's ingredients, the level of hold it provides, its texture and consistency, as well as its long-term effects. Checking product reviews and ratings, and considering price and value for money are also important. If your hair is chemically treated, choose a serum that won't interfere negatively with your treatment.

Now, let's elaborate on these points:

  • Understanding your hair type: The effectiveness of a straightening serum can depend on whether your hair is dry, oily, thin, thick, curly, or straight.
  • Identifying your hair's needs: Some serums offer additional benefits like adding shine, taming frizz, or protecting against heat. Identify what your hair needs most for optimal results.
  • Considering the ingredients: Ingredients can impact the serum's performance. Silicones can make hair smoother and shinier, while proteins and oils can strengthen it.
  • Understanding the level of hold: The level of hold refers to how well the serum maintains your straight style. Match the hold level with your hair type and desired style.
  • Checking product reviews and ratings: Reviews and ratings can provide insights into a product's effectiveness. Pay attention to reviews from individuals who share your hair type and concerns.
  • Considering texture and consistency: The texture and consistency can affect the serum's application and performance. A balanced consistency - not too thick or thin - is usually best.

How to apply hair straightening serums?

Applying a hair straightening serum properly can help you achieve a sleek, frizz-free look while protecting your hair from heat and damage.

Here's a step-by-step guide on how to do it effectively:

Step 1: Wash and condition your hair

Begin with clean hair. Use a gentle, sulfate-free shampoo and follow up with a nourishing conditioner. These products help to prepare your hair for the straightening process by removing dirt and oils and restoring moisture.

Step 2: Towel-dry your hair

Once you've rinsed out the conditioner, lightly towel dry your hair. Avoid rubbing, as this can lead to frizz and breakage. Instead, blot or squeeze your hair gently with the towel.

Step 3: Detangle your hair

Use a wide-tooth comb or a detangling brush to gently remove any knots or tangles. Start from the ends and work your way up to the roots to minimize breakage.

Step 4: Apply the straightening serum

Take a pea-sized amount (for short hair) or a dime-sized amount (for long hair) of the serum into your hands.

Rub your hands together to evenly distribute the serum, then apply it through your hair, focusing on the mid-shaft to ends rather than the roots to avoid making your hair look oily.

Use a comb to ensure the serum is evenly distributed throughout the hair.

Step 5: Dry your hair

If time allows, allow your hair to air dry partially before blow-drying. This can reduce the amount of heat your hair is subjected to. If you're in a hurry, use a blow dryer on the lowest heat setting.

Step 6: Section your hair

For the best results, straighten your hair in sections. Divide your hair into sections starting from the nape of your neck and work your way up.

This will allow you to focus on smaller portions of hair, leading to more effective straightening.

Step 7: Use a straightening iron

Pre-heat your straightening iron while you're sectioning your hair. When the iron is ready, straighten one section at a time, moving the iron slowly from the roots to the ends. Repeat this process until all sections are straight.

Step 8: Apply a finishing product

To add shine and further protect against frizz, consider using a finishing product, like a shine spray or anti-humidity spray. Spray lightly and evenly over your hair for the best results.

Remember, every individual's hair is different, so it may take some trial and error to find the routine that works best for your hair.

Always make sure to protect your hair from heat damage and to keep it well-nourished and moisturized.


Finding the right hair straightening serum can be a game-changer, transforming curly and unruly hair into straight and smooth hair.

This guide has provided an in-depth look at 9 of the best hair straightening serums available in 2024. 

With options to cater to different hair types and concerns, you are now equipped with the knowledge to make a well-informed choice, if you want to keep your hair healthy. 

With a good hair serum, you can enjoy a frizz-free, sleek, and straight hair look every day.

Remember, the best serum for you depends on your specific hair type, needs, and goals. Select one serum at your earliest, and embrace the journey towards glossy, straight hair. 


Can hair straightening serums permanently straighten hair?

No, hair straightening serums cannot permanently straighten hair. They work by coating the hair shaft, reducing frizz, and giving the hair a smoother, straighter appearance. However, the straightening effect is temporary and typically lasts until your next wash.

Can I use a hair straightening serum on color-treated hair?

Yes, most hair straightening serums are safe for color-treated hair. However, it's always a good idea to check the product's description or consult with a hair professional to be sure.

How often should I use a hair straightening serum?

Generally, you can use a hair straightening serum each time you wash and style your damp hair. However, the frequency may vary depending on the product's instructions and your hair's needs.

Can I use a hair straightening serum without using heat styling tools?

Yes, you can use a hair straightening serum without heat styling tools. However, for best results, most serums are recommended to be used in conjunction with a straightening tool like a flat iron or a hair dryer.

Can a hair straightening serum make my hair look greasy?

If used correctly, a hair straightening serum should not make your hair greasy. It's important to use the right amount of product—too much can weigh down your hair and give it a greasy appearance. Start with a small amount, and add more if needed. Remember, it's easier to add more product than to remove it once it's applied.


  1. https://www.tandfonline.com/doi/full/10.2147/CCID.S271013 
  2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3509882/ 

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Luat Duong

Luat Duong is a Copenhagen-based writer and content strategist specializing in hair loss and health. His work has been featured in MyHealthGuide, The Right Hairstyles, and Woman's Era. He is a graduate of Vaasa University. You can connect with him on LinkedIn.