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oneskinOS-01 Peptide Hair Scalp Serum

Hair serum

$69

or save up to 10% more with Subscribe & Save on Amazon

Size 50 ml, $40.81 / fl oz

Sold by OneSkin Co. Amazon's shipping and returns apply. Who sells oneskin on Amazon

Amazon price as of Oct 5, 2026, 2:00 AM ET, subject to change: the price on Amazon at checkout is the one that applies. We may earn a commission; the price you pay is the same.

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About the Product

What it is: Hair serum, 50 ml. Safe & clean. Suitable for all hair types and sensitive scalps, OS-01 HAIR is fragrance-free, color-safe, and cruelty-free (Leaping Bunny certified). Dermatologist-tested and awarded the National Eczema Association Seal of Acceptance.

What Else You Need to Know:

  • Powered by the os-01 senescence-blocking peptide: The only scalp serum formulated to target follicle-cell senescence, a key root cause of age-related hair thinning, at the source.
  • Improves hair density & thickness: Formulated to visibly increase hair density and thickness over time, while helping reduce visible shedding.
  • Visible results build over time: Supports visibly fuller hair with consistent use, with results that continue to improve the longer it's used.
  • Lightweight, non-greasy formula: This fast-absorbing, water-based serum dries residue-free and never weighs hair down. Apply 1-2 times daily directly to the scalp and massage in; do not rinse.

From the Amazon listing.

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$40.81 / fl oz