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The Best Keratin Hair Serums for Frizz-Free Locks

Courtney BIrtcher
Written by Courtney Birtcher

If you’re looking to give your hair a luxurious makeover, a keratin hair serum is the way to go. A keratin hair serum can nourish and protect your hair while making it silky smooth and glossy. There are many options on the market, but not every option is the right one for your needs. To help you in your search for the best keratin serum for your hair type, we rounded up the leading products on the market. We’ve included options based on ingredients, smell, and moisture. With the help of any one of these products, you’ll finally be able to give yourself a salon-level makeover, so keep reading below!

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What To Consider Before Buying Keratin Hair Serum

When searching for the perfect keratin hair serum, there are a few key things to look out for. Here is a guide so you can make an informed decision and find a product that best suits your needs.


When choosing a keratin hair serum, it’s essential to look for products with natural and safe ingredients. These not only nourish and protect the hair from environmental damage, but they may also give the serum its pleasant scent without being too overpowering or relying on synthetic fragrances. Some of the best ingredients to look for are hydrolyzed keratin, sunflower seed oil, coconut oil, jojoba oil, and macadamia nut oil.


A pleasant scent is important with keratin serums as they will linger on your hair after treatment. Avoid any that have a strong and unpleasant odor as this can be overwhelming after a few hours of wear. Natural fragrances are usually a safe option when selecting a pleasant-smelling serum.

UV protection

UV protection is essential when looking for a keratin serum as sun exposure can damage your hair over time if left unchecked. Look for products that offer UV protection so you can keep your hair safe from the sun’s harsh rays.


Keratin serums should be able to lock in moisture to keep your hair looking healthy and soft. Opt for serums with moisturizing ingredients like shea butter, aloe vera, or honey.

Repairing abilities

Look for a keratin serum that has a design for repairing damaged strands. Opt for formulas containing hydrolyzed keratin as this helps rebuild weakened strands, restore shine, and smooth your locks. It also helps protect against breakage in future styling sessions.


The consistency of a keratin serum is important as it affects how easy it is to apply and how well absorbs into both the scalp and hair. Avoid serums that are too thick or too thin for easy application and absorption. It’s a good idea to go for ones with a medium consistency instead for optimal results.

Reviewing the Best Keratin Hair Serums of 2024


Vitamins Hair Cosmetics Keratin Hair Serum


  • Protects hair from sun damage
  • Provides protein repair
  • Suitable for all hair types


  • Fragrance may be too strong for some

The VITAMINS Hair Cosmetics Keratin Hair Serum features a blend of Moroccan argan and coconut oil and provides instant thickness and fullness to the hair. It also helps to revive, restore, and repair dry and damaged hair with collagen repairing and hydrating therapy. The included biotin and castor oil provide nourishment and moisture to the hair without making it greasy or weighed down. The formula is even water-based and sulfate-free to ensure weightlessness and bounce. Plus, it is alcohol-free, paraben-free, and cruelty-free, and comes in a compact size that is easy to take with you whenever you travel.


GK HAIR Keratin Hair Serum


  • Provides hydration
  • Helps tame frizzy and brittle hair
  • Prevents further damage
  • Easy to apply


  • Bottle size is smaller than other options

GK HAIR’s Keratin Hair Serum is a powerful and nourishing product  formulated with a combination of argan oil and keratin. The salon-like formula also helps to tame frizz and brittle hair, while sealing in moisture and providing additional protection against environmental factors. Its lightweight feel makes it easy to apply on dry or damp hair after shampooing and conditioning. The serum also provides heat protection from heat tools.


L Luseta Keratin Hair Serum


  • Nourishes damaged hair
  • Designed to be weightless
  • Safe for color-treated hair
  • Free of sulfates and parabens


  • May make your hair greasy

The Luseta Keratin Hair Serum is an excellent product for anyone who has dry and damaged hair. The unique keratin oil-infused formula nourishes and strengthens the hair, leaving it feeling strong, healthy, and shiny. The serum is completely color-safe and free of sulfates, so it won’t damage or fade your hair or your dye in any way. 


Remilia Hair Keratin Hair Serum


  • Easy to use
  • Comes in travel-friendly capsules
  • Free from parabens or sulfates


  • May be too oily for some

The Keratin Hair Serum from Remilia Hair is an effective and easy-to-use product that can strengthen, protect, and repair damaged hair. This hair treatment contains plant-based capsules that are rich in vitamins and proteins that help reduce frizz, breakage, tangles, and split ends after just one use.  The formulation of this product also works as a heat protectant. It leaves your hair non-greasy and smelling fresh all day long, without any need for added styling products. Plus, it works for all types of hair and is even safe for chemically-treated hair.


Keranique Keratin Hair Serum


  • Repairs damaged hair
  • Improve thickness and volume
  • Contains natural ingredients


  • May be uncomfortable on the scalp

The Keranique Keratin Hair Serum is a unique solution for hair regrowth and hair loss prevention. The serum helps reinforce, protect, and repair thinning hair with its Keratin Amino Complex protein, adding volume and thickness to each strand while nourishing each follicle. The serum also contains natural ingredients that offer additional nourishment.

People Also Ask

  • Q: How do you use a keratin hair serum?

    A:Most keratin serums work great on damp hair. First, begin by washing and conditioning the hair, Next, towel-dry it until it is damp. Apply a small amount of serum onto the palms of your hands and then distribute it evenly throughout your hair, focusing on the ends. After applying the serum, massage it in for two to three minutes using long, gentle strokes. After massaging in, comb through the hair with a wide-toothed comb to ensure the even distribution of the product.

  • Q: Are keratin hair serums safe to use?

    A:Yes, keratin serums are generally considered safe for use on most people’s scalp and hair unless their scalp or individual strands are particularly sensitive or damaged. Just be sure to check the ingredients listed on products ahead of time, as some may contain other potential irritants like artificial fragrances or dyes.

  • Q: How often should you use a keratin hair serum?

    A:It really depends on your individual needs. If you have particularly dry, brittle hair you may want to use it more often than someone with naturally manageable tresses. As a general guideline, it’s typically recommended to use a keratin serum once or twice weekly after washing to maintain optimal levels of softness and shine.

  • Q: Does keratin hair serum work for all hair types?

    A:Yes, most keratin serums can work well on all sorts of locks regardless of length or curl pattern. Although, some products may have a formula for specific types of hair.

  • Q: Does keratin hair serum work on damaged hair?

    A:Yes, in addition to providing shine and softness, keratin serums can also help repair split ends and even reduce frizziness in damaged strands if you use them regularly over time.

  • Q: Do I need to use other products with the keratin hair serum for great results?

    A:While many people choose to supplement their routine with other products such as deep conditioners and heated styling tools, you do not need anything else in order for your keratin serum to work effectively on your locks.

  • Q: Can I use the keratin hair serum on wet or dry hair?

    A:Keratin serums can work for either wet or dry hair depending on which type you select. So, be sure to read the instructions carefully before applying it.

Why trust Us

At Us Weekly, we aim to inform readers to make smart purchasing decisions, saving you both time and money. Our editors are obsessed with finding products in a variety of categories from fashion and beauty, to home and fitness.

We try various products, so we can recommend our favorites, and we also summarize feedback and data from other customers. Data, like product reviews and ratings, helps us recommend the best product choices for individual price points and needs.

On top of that, we highlight unique product features for special use cases, ingredients preferences, and more. We strive to make sure you are discovering new products that can make your life easier, while keeping you up to date with the best product choices for types of items you already know and love.

Courtney BIrtcher

By Courtney Birtcher

Courtney is a lifestyle commerce writer specializing in health, fitness, fashion, and beauty topics on Us Weekly; she currently writes similar review and how-to articles for Blissmark and The Supplement Institute in addition to being a social media influencer on Instagram and content creator on TikTok. In her spare time, she enjoys reading, adventuring with her three dogs through her home state of Ohio, and spending time at her gym.

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