Nécessaire - The Scalp Serum

The serum is a leave-in, visible hair growth treatment. This water-light formula is infused with clinically proven ingredient; a 5% Biomimetic Peptide Blend for visibly thicker, fuller, healthier hair. It's color-safe, keratin-safe, and non-sticky—it leaves no residue. It's also hypoallergenic, dermatologist-tested, and non-comedogenic.