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OUAI Scalp Serum vs. Kerastase Genesis vs. The Ordinary Multi-Peptide: Which One is Best for You?

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OUAI Scalp Serum vs. Kerastase Genesis vs. The Ordinary Multi-Peptide: Which One is Best for You?

Whether you’re looking to address thinning hair or always on the hunt for hair care products that can boost hair density and give my hair a fuller, healthier appearance,there are many hair growth serums in the market to choose from.Over the years, OUAI, Kerastase and The Ordinary are some of the biggest brands when it comes to hair care. And OUAI Scalp Serum, Kerastase Genesis, and The Ordinary Multi-Peptide are the best hair and scalp treatments. But which is better? Is OUAI Scalp Serum better than Kerastase Genesis or The Ordinary? What is the best hair Scalp Serum?Today, we’ll compare hair serum from the three brands in this OUAI Scalp Serum vs. Kerastase Genesis vs. The Ordinary guide.

OUAI Scalp Serum Review

What is OUAI Scalp Serum?

Founded by renowned celebrity hairstylist Jen Atkin, Ouai has redefined the hair care landscape. Ouai represents sophistication in hair care, combining luxury with the simplicity of everyday use. Deeply rooted in the effortless elegance of Parisian style, the brand's ethos shines through in its Scalp Serum. Designed to nourish and rejuvenate the scalp, this product lays the foundation for hair that exudes health and vitality.

The OUAI to healthy hair starts with the scalp. This skincare-inspired serum helps balance and hydrate your scalp to create an ideal environment for hair to thrive. Drop OUAI every day on your scalp for best results.

Source:sephora.com

How It Works

Ouai Scalp Serum is a testament to the brand's commitment to innovative, results-driven formulations. It uses a synergistic blend of scientifically-backed ingredients and natural extracts. Hyaluronic acid provides unparalleled hydration to keep your scalp hydrated and flake-free.

Salicylic acid is a gentle exfoliant to remove dead skin and product residue, while a cocktail of peptides and adaptogens strengthens the scalp's defences and promotes robust hair growth.

Key Features

Fosters a healthy, balanced scalp
Soothes irritation from styling
Promotes the appearance of thicker, fuller hair

Hair Concerns:Dryness, Thinning, Flaky, Dry Scalp

Best For: Fine, medium, and thick hair

Price & Size

Standard size:2 oz / 60 mL - $52

OUAI Scalp Serum Pros and Cons

Pros	Cons
Designed for all hair types, including sensitive scalps. Free from harsh chemicals, ensuring gentle care. Promotes a healthier scalp with regular use, potentially aiding in hair thickness and growth.	Premium price point reflects its high-end branding. Scent, while pleasant to many, may be different from everyone's liking.

Where to Buy OUAI Scalp Serum?

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Kerastase Genesis Review

What is Kerastase Genesis?

Kérastase is a brand consistently at the forefront of hair innovation, and this jelly-textured growth serum is one of its best.Kérastase Genesis Strengthening Serum is silicone-free hair and scalp serum—with a lightweight texture—that delivers intensely fortifying care to reduce breakage and strengthen weak hair.

This concentrated serum is here to revolutionize your hair game and give you the strong, resilient locks you've always dreamt of. Say goodbye to weak, brittle hair and hello to the confidence that comes with knowing your strands are fortified and protected. With its lightweight, non-greasy texture, this serum effortlessly glides onto your tresses, delivering intense care that penetrates deep into each strand and the scalp. What sets this serum apart is its commitment to continually strengthening your hair, day in and day out. No more worrying about hair fall or breakage, as this serum nourishes your hair from root to tip, ensuring it grows to its fullest potential.

Source:kerastase-usa.com

How It Works?

A combination of Aminexil, Ginger Root, and Caffeine enables this serum in treating hair fall at the follicle level. It is claimed to help "re-anchor hair follicle more solidly into the scalp while building the optimal environment for future growth" as well as "reinforces the natural protective barrier of the scalp". The end result is healthier-looking hair.

Containing energising ginger root and Aminexil (L'Oreal's big dog in the hair loss treatment game), the lightweight serum left us with healthier heads of hair and fewer breakages. Locks were left shinier and smoother, too.

Key Features

Strengthens Hair Weakened by Heat and Brushing
Hydrates Hair and Adds Shine
Has a Lightweight, Non-Greasy Finish

Hair Concerns: Volumizing, Damage/Split Ends/Breakage, Thinning

Best For: Fine, medium, and thick hair

Price & Size

Standard size: 90 mL/ 3.04 oz - $62

Kerastase Genesis Pros and Cons

Pros

Cons

Visible hair fall reduction
The formula helps to fortify hair strands, making them less prone to breakage.
The signature fragrance is often described as fresh and invigorating.
Some users find the products improve scalp health and reduce scalp irritation.

Compared to other hair care brands, Kerastase products are generally considered expensive.
While designed for hair prone to breakage and fall, it might not be ideal for very oily scalps.
The strong scent may be overwhelming for some individuals.

Where to Buy Kerastase Genesis Strengthening Serum?

kerastase-usa.com: up to 7% cashback
walmart.com: up to 1% cashback
sephora.com: up to 4% cashback

The Ordinary Multi-Peptide Review

What is The Ordinary Multi-Peptide Serum?

The multi-peptide serum is a leave-in treatment that is "designed to support the scalp and give you thicker, denser, fuller-looking hair," according to the brand. Its water-based formula contains three key peptide technologies — Redensyl, Procapil and Baicapil — which The Ordinary says can target stem cells and increase blood flow to the scalp. The product is also made to work on any hair type or texture.

The Ordinary Multi-Peptide Serum for Hair Density offers visible improvements when used regularly. With consistent application, it strengthens your scalp and hair, improves its overall health, and enhances density. While the texture may leave a slight tackiness, the long-term benefits far outweigh this minor drawback.

Source:sephora.com

How It Works?

According to The Ordinary, the formula boasts a technology called REDENSYL complex. It contains peptides, which are said to repair and strengthen hair. Alongside this powerhouse ingredient, you'll find caffeine, which the brand says makes the formula easily absorbed into the scalp, alongside castor oil, which has long been championed by trichologists and hair loss experts for stimulating hair growth and thickness when combined with regular scalp massage.

Although the product is labeled as a serum, the texture is actually much thinner, like water. But don't underestimate it. It sinks into the scalp without a trace, so it doesn't feel greasy or sticky in the hair.

Key Features

A solution for visible hair thickness and fullness
The formula is lightweight and offers a combination of peptide technologies alongside a series of plant-based extracts.
This formula contains REDENSYL™, Procapil™, CAPIXYL™, BAICAPIL™, AnaGain™, and High-Solubility Caffeine.

Hair Concerns: Thinning,Volumizing

Best For: Straight, wavy, curly, coily and all hair types

Price & Size

Standard size: 2 oz/ 60 mL - $22.80
Mini size:1 oz / 30 mL - - $15

The Ordinary Multi-Peptide Hair Serum Pros and Cons

Pros	Cons
Lightweight formula Effective in encouraging hair growth Dries quickly Affordable Soothing ingredients Formula feels lightweight on scalp	Must be applied on dry hair, not wet may look greasy initially Takes consistent use and patience to see results

Where to Buy The Ordinary Multi-Peptide Hair Serum?

OUAI Scalp Serum vs. Kerastase Genesis vs. The Ordinary Multi-Peptide Comparison Side by Side

1.Key Benefits

OUAI Scalp Serum

Helps foster a healthy, balanced scalp
Helps soothe irritation from styling
Helps to promote the appearance of thicker, fuller hair
Clinically proven to improve the look of fuller, thicker hair 100% of users showed improvement in the look of fuller, thicker hair*
Clinically proven to help improve the overall health of the scalp 90% of users showed improvement in health of their scalp* *Based on a 16-week expert grading study performed on 32 subjects
91% of users reported that their hair feels healthier* *Based on a 12 week consumer study of 115 participants
87% of users reported a visible improvement in the appearance of their hair* *Based on a 12 week consumer study of 115 participants

Kerastase Genesis Strengthening Serum

A revitalizing solution for strengthening and enhancing hair
Specifically formulated to combat hair fall caused by breakage, promoting overall hair health
Lightweight and potent formula nourishes and fortifies the hair fiber, reducing vulnerability
Supports a healthier scalp environment and visibly contributes to thicker, more resilient hair
Elevate your hair care routine with this advanced serum to rejuvenate and strengthen from root to tip

The Ordinary Multi-Peptide Serum for Hair Density

The Ordinary Multi-Peptide Serum for Hair Density promotes thicker, denser-looking hair with REDENSYL, Procapil, and CAPIXYL.
This lightweight leave-in formula supports the scalp for fuller, healthier looking hair over time.
Promotes thicker, fuller, and denser-looking hair by supporting the scalp.
Offers a combination of peptide tehcnologies alongside a series of plant-based extracts.
Leave in formula

2.Key Ingredients

OUAI Scalp Serum

Highlighted Ingredients	Adaptogens and hyaluronic acid can help promote hydration and a healthy barrier. Red Clover Flower Extract helps to reduce scalp discomfort from styling. Peptides support the appearance of fuller, thicker, and healthier hair.
Ingredient Callouts	Free of parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, hydroquinone, sulfates SLS & SLES, triclocarban, triclosan, and contains less than one percent synthetic fragrance. It is also vegan, gluten-free, cruelty-free, and comes in recyclable packaging.

Kerastase Genesis Strengthening Serum

Highlighted Ingredients

GINGER ROOT:Protects hair against daily external aggressors.
CAFFEINE:Helps improve scalp micro-circulation thanks to its stimulating properties.
ARGININE: Improve circulation and nourish the hair roots.

Ingredient Callouts

Aqua / Water / Eau, Alcohol Denat., Arginine, Peg-40 Hydrogenated Castor Oil, Citric Acid, Niacinamide, Calcium Pantothenate, Caffeine, Limonene, Pyridoxine Hcl, Linalool, Polyquaternium-11, Safflower Glucoside, Benzyl Salicylate, Coumarin, Citral, Benzyl Alcohol, Xylitylglucoside, Citronellol, Benzyl Benzoate, Anhydroxylitol, Xylitol, Zingiber Officinale, Root Extract / Ginger Root Extract, Resveratrol, Tocopherol, BHT, Sodium Citrate, Parfum /Fragrance.

The Ordinary Multi-Peptide Serum for Hair Density

Highlighted Ingredients

Redensyl (Givaudan): Targets stem cells and human fibroblasts from the derma papilla to improve hair density.
Procapil (Sederma Inc.): Increases blood flow in the scalp, which allows the hair to be well nourished, resulting in appearance of thicker hair.
Baicapil (Provital): Increases the look of hair density.

Ingredient Callouts

Aqua (Water), Propanediol, Butylene Glycol, Glycerin, Caffeine, Biotinoyl Tripeptide-1, Acetyl Tetrapeptide-3, Larix Europaea Wood Extract, Pisum Sativum Extract, Scutellaria Baicalensis Root Extract, Triticum Vulgare Germ Extract, Glycine Soja Germ Extract, Trifolium Pratense Flower Extract, Camellia Sinensis Leaf Extract, Apigenin, Oleanolic Acid, Arginine, Glycine, Calcium Gluconate, Zinc Chloride, Lactic Acid, Gluconolactone, Dextran, Maltodextrin, Hydroxyethylcellulose, Xanthan gum, Pentylene Glycol, Dimethyl Isosorbide, Polysorbate 20, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Trisodium Ethylenediamine Disuccinate, Sodium Metabisulfite, Sodium Benzoate, Phenoxyethanol, Chlorphenesin.

3.Scent Type

OUAI Scalp Serum

Fragrance Description: Scented with Cape Town, a calming and earthy fragrance of spearmint, ginger, basil, and green fig.

Top notes: Ginger, basil, Spearmint
Middle notes: Tomato Leaves, Green Fig
Base notes: Ambroxan, Wet Grass

Kerastase Genesis Strengthening Serum

Fragrance Description: The Genesis fragrance is an invigorating blend of woody citrus notes. Fresh bergamot opens the scent, followed by the soothing aroma of lavender, and finally, the grounding depth of vetiver. This captivating combination captures the essence of the outdoors, offering a revitalizing and empowering experience for your hair and senses.

Top Notes:Lime and Bergamot zest
Heart Notes:Rose and Bergamot flower
Base Notes:Vetiver Musk

The Ordinary Multi-Peptide Serum for Hair Density

Fragrance Free.

4.Ease Of Use

OUAI Scalp Serum

To use the OUAI Scalp Serum properly, follow these OUAI instructions:

Apply daily for best results. This is a leave-in product. Do not rinse out.
Must be applied directly to the scalp.
Can be applied in the am or pm on wet or dry hair.
Do not apply to open wounds and/or broken skin on the scalp.
Start application in your natural part and along your hairline
Press and release the bulb once to fill the glass pipette. Unscrew the cap.
Use short, quick presses to release drops throughout the scalp.
Massage in to help distribute and absorb into the scalp.

Kerastase Genesis Strengthening Serum

Wondering how to use Kerastase Genesis Strengthening Serum for the best results? Well, Kerastase’s official instructions for its Genesis Strengthening Serum are:

Apply directly to a dry or towel-dried scalp, focusing on areas where roots need the most strength.
Four doses are recommended for optimal results (one dose is a single pipette, up to the black mark).
For shorter hair, the recommended dosage is two to three pipettes.
Use fingers to gently massage into scalp.
Do not rinse.
Round out your routine with the full Genesis range (sold separately) to maximize strengthening benefits.

The Ordinary Multi-Peptide Serum for Hair Density

Here is The Ordinary Multi-Peptide Serum for Hair Density suggested usage:

Apply a few drops or as needed to clean, dry scalp.
Massage into scalp thoroughly.
Apply once daily, ideally at bedtime.
This formula is a leave-on/-in treatment.
Do not wash hair or scalp after application.

OUAI Scalp Serum vs. Kerastase Genesis vs. The Ordinary Multi-Peptide Comparison Chart

OUAI Scalp Serum vs. Kerastase Genesis vs. The Ordinary Multi-Peptide: what are the differences? Ultimately, let's see the comparison chart below!

	OUAI Scalp Serum	Kerastase Genesis	The Ordinary Multi-Peptide Serum
Price	$52	$62	$22.80
key Ingredient	Adaptogens and hyaluronic acid, Red Clover Flower Extract,Peptides	Edelweiss Native Cells, Ginger Root, Arginine, and Caffeine.	Redensyl,Procapil and Baicapil
Targets	Thickening, Hydrating, Soothing	Thickening	Hair Density
Suited to	All Hair Types	All Hair Types	All Hair Types
Format	Serum	Liquids	Serum: Water-Based
When to Use	Day or Night	Day or Night	Night
Alcohol- Free	✔	✔	✔
Oil-Free	x	x	x
Silicone-Free	✔	✔	✔
Vegan	✔	✔	✔
Cruelty-Free	✔	✔	✔

Conclusion: Which Hair Serum Is Best For You?

OUAI Scalp Serum

OUAI's new skin care-inspired serum is unlike other hair care because it gets to the root of healthy hair. This scalp oil supports thicker, fuller-looking hair. Designed to create a healthy barrier, promote hydration, and reduce discomfort for all hair types.

This skincare-inspired serum helps balance and hydrate your scalp to create an ideal environment for you hair to thrive.

OUAI Scalp Serum helps to create the ideal environment for hair health and growth, so if your hair is flaky or dry scalp, or if you want to have fuller, thicker, and healthier hair, you can get this one.

Kerastase Genesis Strengthening Serum

The Kérastase Genesis Anti Hair-Fall Fortifying Serum is the obvious star of the show as it treats right at the roots.

The serum has a lightweight formula that will not leave a residue when hair dries. It works to strengthen hair while leaving a lightweight, non-greasy finish.

If you're struggling with baby hairs' that refuse to grow past a certain point, add this one to your basket ASAP. For those prone to dry scalps, dandruff and chronically dry, weakened strands, this one's a winner.

The Ordinary Multi-Peptide Hair Serum

The Ordinary Multi-Peptide Serum for Hair Density is a concentrated leave-in formula designed to support the scalp and give you thicker, denser, fuller-looking hair. The formula is lightweight and offers a combination of peptide technologies alongside a series of plant-based extracts.

This concentrated formula from The Ordinary’s not-so-ordinary product list is a godsend for thinning hair. It is designed to repair hair and make your locks healthier and denser. It’s for all those of you who want a mane that cascades down your back.

If you’re looking to boost your hair’s fullness and vitality, this serum is a great addition to your routine. Give it a try and see the difference for yourself—your hair will thank you!

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