best seller
Scalp Serum
Scalp Serum
Scalp Serum
Scalp Serum
Scalp Serum
best seller
Scalp Serum
Scalp Serum
Scalp Serum
Scalp Serum
Scalp Serum

GOOD THINGS COME TO THOSE WHO OUAI

Scalp Serum

$54.00
All Gone

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.

Perfect For

  • Thinning
  • Flakey/Dry Scalp
  • Volumizing

PRODUCT DETAILS

Helps support the appearance of thicker, healthier hair. Featuring Adaptogens like Arctic Root, Siberian Ginseng, and Chaga Mushroom combined with Hyaluronic Acid, this serum can help promote hydration and a healthy barrier. Good for all hair types.

How to Use

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.
SCALP SERUM is skin care inspired. The key is consistent use to see results and absorption. Face serums typically can take anywhere from a 1 minute to a few minutes to absorb and completely dry. Same goes for SCALP SERUM – wait until the serum has completely dried and absorbed before washing hair.
If applying at night you are safe to wash your hair and scalp in the morning. If you apply in the morning you will be safe to wash your hair and scalp in the afternoon or evening

Good to Know

Worried about hair looking oily? We got you. Scalp Serum easily absorbs into the scalp & works for all hair types and textures, including oily hair types.




KEY INGREDIENTS
Arctic Root, Siberian Ginseng, and Chaga Mushroom
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.
Vegan
As always, all our products are
  • CRUELTY FREE
  • GLUTEN FREE
  • PARABEN FREE
  • PHTHALATE FREE
  • SLS & SLES FREE
  • COLOR SAFE
  • KERATIN SAFE
FULL INGREDIENTS

Aqua / Water / Eau, Polysorbate 20, Butylene Glycol, Glycerin, Polyquaternium-7, Rhodiola Rosea Extract, Sodium Hyaluronate, Tocopheryl Acetate, Acetyl Tetrapeptide-3, Tocopherol, Rosa Centifolia Flower Extract, Dextran, Trifolium Pratense (Clover) Flower Extract, Acanthopanax Senticosus (Eleuthero) Root Extract, Rhaponticum Carthamoides Root Extract, Inonotus Obliquus (Mushroom) Extract, Selaginella Lepidophylla Extract, Ethylhexylglycerin, Disodium Edta, Sodium Hydroxide, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Citric Acid, Sodium Benzoate, Phenoxyethanol, Fragrance / Parfum, Eugenol, Limonene, Linalool.

FAQs
  • DO YOU HAVE TO WASH THE SERUM OFF?
    No, it’s a leave-in serum. If you’re applying at night, it’s safe to wash your hair in the morning. If you apply in the morning, you’re safe to wash in the afternoon or evening.
  • CAN MEN USE THESE PRODUCTS TOO?
    Like everything in the OUAI collection SCALP SERUM are gender inclusive.
Add to Bag

The Results

Before & After

The Scent:
Cape Town

The Scent:
Cape Town

An earthy fragrance with notes of ginger and spearmint.

GINGERGINGERGINGER

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Scalp Serum has a rating of 4.6 stars based on 427 reviews.

Overall rating: 4.614486 / 5 from 428 reviews.

AI Generated Review Summary

This scalp serum is praised for its effectiveness in balancing and hydrating the scalp, leading to noticeable improvements in hair health and appearance. Customers appreciate the refreshing feel and pleasant smell, though opinions vary on hair growth and density changes.

Summary topics

  • Effectiveness: 8%
  • Scalp Feel: 15%
  • Hair Health: 34%
  • Scent: 36%
  • Hair Appearance: 4%

Review topics: ["volume","absorbs","results","problem","improvement","feels","look","smells","amount","hair","scalp","price","bottle","oil","light","works","consistency","packaging","weight","use","residue","body","fragrance","difference","skin","serum","growth","change","buy","application"].

Review highlights

  • "The serum smells wonderful and my scalp feels cool and comfortable in between washes." — Natasha
  • "I’ve been using it for 2-3 weeks and my scalp feels healthier, and my hair looks healthier and feels softer." — Sara S.
  • "After the first use I noticed such a huge difference WAY less flake, my scalp felt amazing, and it smells sooo good." — Mari G.

Reviews

Scalp

"Doesn’t help scalp. Don’t waste your money."

— Susan L. (1/5)

"Amazing product USING IT FOR YEARS INCREDIBLE"

— Jerry (5/5)

"Incredible scalp serum! Very light weight and non-oily. Does not weigh my fine hair down. Genuinely fixed my scalp psorasis! I will buy this product forever."

— Ashley (5/5)

"Love this stuff."

— Claudette (5/5)

Scalp feels great and I don’t shed as much

"This serum feels wonderful on the scalp, is easy to work through and smells great. It does seem to help invigorate the scalp and lead to less shedding for me post-partum. I really like the product!"

— Mahashraya S. (5/5)

"Doesnt make your scalp all sticky"

— Zina (5/5)

"My only wish is that i can get more at a time! I have tried everything to help with my scalp, i have eczema and sensitive skin with an allergy to aloe vera so my options are very limited. My sister suggested this and it has been working magic for my scalp! Would absolutely recommend over head n shoulders any day! 💝🥰"

— Kalea (5/5)

Amazing and consistent

"I love the scalp serum it has consistently found a place on my list of things to repurchase and I’ve always been able to expect a consistent level of quality. I really appreciate the straightforwardness and simplicity of the products."

— Katherine (5/5)

Better than expected!!

"I was looking for a thickening hair serum mainly for my mid-ends, but then i found this scalp serum. Noticed i had a bald spot on the side of my head and after like 3-4 weeks of everyday use, the bald spot is almost completely gone. Wish i had taken a before picture but even without it I had very noticeable results. This serum really delivered above my expectations, absolutely going to buy again! 10/10 sooo worth it"

— Ellie (5/5)

A must in my routine

"I started losing my hair and was really concerned. I started using this serum and have seen a difference. It does take consistency and time, but it's worth every penny!"

— Alyssa (5/5)

Q&A

Be honest - can I overdo it with this serum? It feels so good on my scalp and smells so good that I often find myself putting 3 droppers full all over my scalp each night!
Hi Kate, 😊 Our recommendation is to apply it directly to the scalp using short, quick presses throughout your part line and scalp, then massage it in for absorption. Consistent daily use is key to seeing the best results. That said, more isn’t necessarily better. If you’re using 3 full droppers and your scalp feels comfortable (not greasy, irritated, or experiencing buildup), there’s no need to panic. However, you likely don’t need quite that much product to get the benefits. Try focusing on even distribution across the scalp rather than saturating it—the serum is formulated to absorb easily and create a healthy, hydrated environment for hair to thrive. And we totally get it—the Cape Town scent makes it hard to resist! 💛
Can this be used on a scalp that has hair loss from chemo?
Hi Susu, This is a great question! We recommend consulting with your doctor if you have any concerns about starting new products as they know your particular needs best! In the meantime, all OUAI products are free of sulfates, parabens, and phthalates. Additionally, we post the full ingredient list of each product on the description pages. I hope this helps!
On average, how many days does the bottle last if I use it every day?
Hi Oscar, Typical period for one unit of scalp serum (60 mL) really depends on how much consumer will use each time. The dosage for two full droppers is about 1.5 mL, if used once a day daily, the bottle should last up to 40 days. Hope this helps! Have a OUAI wonderful day!
Is the scalp serum safe for pregnant and/or nursing mothers?
Thank you for reaching out to our OUAI team and congratulations on your growing family! We choose every ingredient carefully to provide the right balance of features and benefits. All of our ingredients are approved for use in both EU and US markets. All OUAI products are also free of sulfates, parabens, and phthalates. Additionally, we post the full ingredient list of each product on the description pages. We recommend consulting with your doctor if you have any concerns about starting new products while pregnant as they know your particular needs best!
I love the scalp serum and the scent. Do you plan on making a perfume out of Cape Town?
At the moment, we only have two products in our Cape Town scent available. However, we will absolutely pass on your feedback in wanting to see a Cape Town Eau du Parfum to the team. The feedback of customers is crucial for knowing what our community wants!