Helped my thinning hair areas
"This serum has noticeably improved my hair growth in thinning areas on the side and top of my scalp. I’m 58 and use it every night on these three areas and even my Aveda stylist has noticed an improvement since March!"
Save 35% on a 90-day supply of our fast-absorbing, skincare-inspired Scalp Serum to balance & hydrate the scalp and create an ideal environment for hair to thrive. 100% of users saw thicker, fuller-looking hair.*
Get 10% off when you subscribe to your OUAI faves
Free U.S Shipping on orders $50+
Save 35% on the Drop OUAI Every Day Kit & stock up on a 90-day supply (3 bottles) of Scalp Serum. This Scalp Serum deeply penetrates the scalp to balance & hydrate while soothing scalp irritation. Made for precise application and quick absorption, this soothing formula won’t ever mess with your hair style or OUAI you down. It uses Red Clover Flower Extract, Peptides and an Adaptogenic Blend with Hyaluronic Acid to create an ideal environment for hair to thrive.
A 90-day supply helps you commit to a consistent daily routine for lasting results & thicker, fuller-looking hair in as early as 90 days:
*Based on a 16-week expert grading study performed on 32 subjects
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.
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 safe to wash your hair and scalp in the afternoon or evening
Aqua (Water, Aqua, Cetyl Alcohol, Behentrimonium Chloride (Anti-Static Agent / Agent Antistatique), Cetearyl Alcohol, Butyrospermum Parkii (Shea) Butter, Amodimethicone, Behentrimonium Methosulfate, Hydrogenated Castor Oil/Sebacic Acid Copolymer, Stearamidopropyl Dimethylamine, Cetyl Esters, Quaternium-87, C18-38 Alkyl Hydroxystearoyl Stearate, Olea Europaea (Olive) Fruit Oil, Propylene Glycol Dibenzoate, Prunus Amygdalus Dulcis (Sweet Almond) Oil, Macadamia Ternifolia Seed Oil, Keratin, Hydrolyzed Keratin, Hydrolyzed Pea Protein, Hydrolyzed Adansonia Digitata Seed Extract, Shorea Stenoptera Seed Butter, Tocopherol, C10-40 Isoalkylamidopropyl- Ethyldimonium Ethosulfate, Ascorbyl Palmitate, Caprylyl Glycol, Bht, Trideceth-3, Trideceth-15, Acetic Acid, Dimethicone, Laureth-23, Laureth-4, Salicylic Acid, Divinyldimethicone/Dimethicone Copolymer, C12-13 Pareth-23, C12-13 Pareth-3, Sodium Hydroxide, Hydroxyethylcellulose, Disodium Phosphate, Sodium Phosphate, Polysorbate 60, Guar Hydroxypropyltrimonium Chloride, Citric Acid, Disodium Edta, Cetrimonium Chloride (Anti-Static Agent / Agent Antistatique), Sodium Chloride, Isopropyl Alcohol, Potassium Sorbate, Benzyl Alcohol, Sodium Benzoate, Phenoxyethanol, Parfum (Fragrance), Linalool, Citronellol
As always, all of our products are:
Paraben-Free, Cruelty-Free, Gluten-Free, Phthalate-Free, SLS and SLES-Free
Ginger, Basil, Spearmint
Tomato Leaves, Green Fig
Ambroxan, Wet Grass
Overall rating: 4.615207 / 5 from 434 reviews.
Review topics: [].
"This serum has noticeably improved my hair growth in thinning areas on the side and top of my scalp. I’m 58 and use it every night on these three areas and even my Aveda stylist has noticed an improvement since March!"
— Lynn J. (5/5)
"wonderful and makes hair look full"
— Susan D. (5/5)
"Smells amazing, effective"
— Meredes P. (5/5)
"Please make a perfume or body mist or hand soap or anything in this scent!! I’d buy immediately!"
— Cb (3/5)
"I love the smell i wish yall had a body spray"
— maria (5/5)
"Doesn’t help scalp. Don’t waste your money."
— Susan L. (1/5)
"Amazing product USING IT FOR YEARS INCREDIBLE"
— Jerry (5/5)
"Love this stuff."
— Claudette (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)
"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)