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"I love this for maintenance when I need some extra love and care."
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Meet our most-loved, clean hair care to keep your scalp and strands nourished all season.
Get a full size of The Body Wash Concentrate in SC.05 Columbia Road ($34 value) when you spend $100+ on hair, body, and SPF essentials. Limited quantities, while supplies last.
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Daily scalp serum with 5% Capixyl™ and 1% Hyaluronic Acid for thicker, fuller, healthier hair. No residue. Quick-dry. All hair. Dermatologist-Tested.
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Suitable for
All hair types.
Why we stand behind it
Nécessaire The Scalp Serum is a daily quick-dry, water-light serum is infused with 5% Capixyl™ - clinically-proven to support thicker, fuller, healthier hair. 1% Hyaluronic Acid provides multi-level hydration for scalp dryness, while Vitamins B3/B5 and ApiScalp strengthen the scalp's protective barrier. The formula dries quickly and does not leave residue. Dermatologist-Tested. Hypoallergenic. Non-Comedogenic. Fragrance-Free. The formula has been awarded the Seal Of Acceptance by the National Eczema Association.
30 ml equates to a 1-month supply.
Key ingredients
5% Capixyl™: Supports thicker, fuller, healthier-looking hair.
1% Hyaluronic Acid (7 Molecular Weights) : Provides multi-level hydration for a dry scalp.
Vitamin B3 | Vitamin B5 | ApiScalp: Help strengthen the scalp's protective barrier.
this product meets
The Credo Clean Standard™
Every product we offer meets our industry leading standards for safety and sustainability.
learn moreThis product is
Cruelty Free
Vegan
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My skin sometimes burns and sometimes tans.
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My skin rarely burns, but tans easily.
My skin looks better in gold jewelry than silver.
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Use once daily on dry or damp hair.
-Squeeze the bulb to fill pipette (pipette will be approximately half full)
-Apply to areas of concern
-Massage in with fingertips
-Do not rinse
-Style as usual
-Daily consistent use is required for results
-The Scalp Serum 30 ml is a 1-Month Supply
We co-founded the nonprofit Pact to demystify how to recycle your beauty packaging empties and divert waste from landfills.
How to recycle your empties
1. Disassemble and clean all components
2. Pick the right disposal bin
3. Drop off your empties at your nearest Pact bin
1 Product Recycled = 10 Credo Rewards Points
create accountAt Nécessaire we believe in less, but better. We design the personal care we need to support our health and wellness. All of our products are dermatologist-tested, hypoallergenic, non-comedogenic and vegan. We use our business to make a positive environmental impact everywhere we can. Nécessaire is a Certified B Corp, Certified Climate Neutral, Certified Plastic Neutral and a How2Recycle partner. Nécessaire donates 1% of all sales to environmental non-profits via 1% For The Planet.
SHOP ALL NécessaireOverall rating: 4.394737 / 5 from 38 reviews.
The Scalp Serum is a daily restorative treatment for thicker, fuller, healthier hair suitable for all hair types. Customers have mixed opinions on its effectiveness and feel, with some noticing a difference and others not seeing any change. Some users find it greasy while others feel it makes their hair softer and voluminous.
Review topics: ["feels","consistency","packaging","use","hair","scalp","difference","serum","drops","greasiness"].
"I love this for maintenance when I need some extra love and care."
— Isabelle (5/5)
"I’m 44 and have always had thick hair, and some may say I still do, but I noticed it was falling out much more than it ever had prior. Hello perimenopause. Even baby hairs were falling out. Since starting this serum, that has stopped. I’ve only been using it for 2 months, and already bought two more back up bottles."
— katie z. (5/5)
"My scalp feels refreshed and comfortable with this serum. It's not at all sticky or greasy. It has never made my hair feel dirty even after a few days. It feels like plain water, but gives just enough moisture that my scalp feels balanced."
— Jennifer J. (5/5)
"I have very thin, fine hair and I feel like I'm actually getting a bit thicker grow in now. I also have scalp psoriasis and this stuff really calms it down. Very easy to apply and dries well--not oily in the slightest!"
— Kristan O. (5/5)
"I tried other brands from Sephora and they made my hair look sometimes greasy or just oily. This one I use and buy in packs of 3 because it goes on like water and works very well. I recommend it!"
— Julee A. (5/5)
"Just got this product that I expect takes at least a few weeks to notice effect. It is clear, colorless and thinly textured(not greasy) as described."
— Suzanne M. (3/5)
"I love this scalp serum for removing build up."
— Isabelle (5/5)
"I've heard a lot of buzz about this which is why I purchased it. Results TBD, fingers crossed. . . at least it doesn't leave my hair looking greasy though!"
— Jennifer M. (4/5)
"amazing scalp serum"
— Fiala (5/5)
"I really like the way it feels and doesn’t leave my scalp oily but too soon to tell it’s true effectiveness."
— Naomi S. (4/5)
We offer clean beauty vetted to the highest standard.
We want to know where ingredients come from and how they were made.
Clean beauty should include the just treatment of humans and animals.
We co-founded Pact to tackle beauty’s packaging waste problem.
This product is: a daily restorative treatment for thicker, fuller, healthier hair.
Good for: all hair types
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