Nécessaire Scalp Serum — 1 fl oz fragrance-free, 5% Capixyl & 1% Hyaluronic Acid for Fuller, Thicker Hair

Nécessaire The Scalp Serum is a fragrance-free, dermatologist-tested daily serum formulated with 5% Capixyl™ and 1% hyaluronic acid to support fuller, thicker-looking hair and soothe the scalp.

If your scalp feels dry, sensitive, or you want to visibly improve hair density without heavy oils or sticky residue, this water-light treatment blends targeted hair-actives with hydrating, barrier-supporting ingredients. Designed for everyday use in damp or dry hair, the serum absorbs quickly and is approved by the National Eczema Association, making it suitable for reactive scalps while remaining fragrance-free, vegan, and cruelty-free.

How does this serum help hair look fuller and thicker?

The formula centers on 5% Capixyl™, an ingredient blend shown to support hair strength and reduce the appearance of thinning when used consistently. Complementary vitamins and ApiScalp work to fortify the scalp environment so hair appears denser over time.

• 5% Capixyl™ concentrates act on hair follicle support and visible thickness.
• Vitamin B3 (niacinamide) and B5 (panthenol) help nourish and condition the scalp.
• ApiScalp complements actives to maintain a resilient scalp barrier.

Can it soothe dryness or scalp sensitivity?

Yes—1% hyaluronic acid in the serum attracts and retains moisture at the skin level, reducing tightness and visible flaking without leaving residue. The fragrance-free, hypoallergenic formulation and National Eczema Association acceptance make it suitable for those with reactive scalps.

• 1% hyaluronic acid hydrates the scalp’s surface layers for lasting comfort.
• Non-comedogenic, alcohol-free texture minimizes irritation.
• Dermatologist-tested and hypoallergenic to suit sensitive skin types.

How do I use The Scalp Serum for best results?

Apply daily to damp or dry hair, targeting areas of concern or the entire scalp. Squeeze the bulb once to fill the pipette halfway, dispense, then massage gently—no rinsing required. Consistent daily use yields the most reliable visible improvement; the 30 ml bottle is designed as a 30-day supply.

• Squeeze bulb once to load pipette half-full for a single application.
• Apply directly to roots, massage with fingertips, then style.
• Use every day; visible results require ongoing application.

What safety and sustainability standards does this product meet?

The Scalp Serum meets high safety and environmental standards: it is tested by dermatologists, labeled hypoallergenic and non-comedogenic, and carries the National Eczema Association Seal of Acceptance. Packaging and company commitments reflect sustainable practices.

• Fragrance-free, cruelty-free, and certified vegan.
• Recyclable glass bottle and multiple sustainability certifications (B Corp, Climate Neutral, Plastic Neutral).
• How2Recycle partner and 1% For The Planet member.

Who is this for? The Scalp Serum suits anyone seeking a lightweight, science-forward daily treatment to support hair that appears fuller and healthier—especially those with sensitive or dry scalps who prefer fragrance-free skincare-grade products. It’s ideal for people wanting a non-greasy, easy-to-use routine booster that partners with styling and other haircare products, provided it’s used consistently as directed.

Ingredients

Aqua/Water/Eau, Butylene Glycol, Propanediol, Sodium Hyaluronate, Acetyl Tetrapeptide-3, Niacinamide, Panthenol, Trifolium Pratense (Clover) Flower Extract, Apium Graveolens (Celery) Seed Extract, Camellia Sinensis Leaf Extract, Biotinoyl Tripeptide-1, Nicotiana Benthamiana Hexapeptide-40 sh-Polypeptide-86, Nicotiana Benthamiana Hexapeptide-40 sh-Polypeptide-9,Nicotiana Benthamiana Octapeptide-30 sh-Oligopeptide-2, Sodium Tocopheryl Phosphate, Dextran, 1,2-Hexanediol, Caprylhydroxamic Acid, Citric Acid, Glycerin.