The Science of Younger Skin – How One Peptide is Changing the Game with Alessandra Zonari

21 Apr 2025 · 20 min
19:57

YouTube interview (published 2025-04-21) with Alessandra Zonari (One Skin co‑founder & CSO) about the biology of skin aging and One Skin’s OS peptide. Key points: senescent ("zombie") cells drive local inflammation, collagen breakdown and barrier loss; OS peptide is described as reducing accumulation of senescent cells, improving DNA repair and lowering inflammatory signaling. Lab data: treatment of human skin tissue in vitro showed a ~2.5‑year reversal in measured biological skin age. Clinical work: a trial in participants >60 years measuring blood markers showed reduced systemic inflammation after 3 months of whole‑body/topical use (manuscript accepted/under review). Product and commercial notes: One Skin launched first product (OS Phase) in 2021; recently released a hair serum developed from two years of research — a 6‑month, 30‑participant trial reported improvements in hair density/thickness and an increase of hairs in the anagen (growth) phase by ~38–43%. The company emphasizes prevention, measuring biological age, and connecting skin health to whole‑body health. Some manuscripts are pending publication.

Questions this video answers

2025-04-21

About 2.5 years (younger) measured from DNA of treated skin tissue.

2021

6‑month study, 30 participants; improvements in hair density/thickness and anagen (growth) phase metrics with reported gains ~38–43%.

After 3 months of topical use (face and body), the OS group showed reductions in systemic inflammatory markers in blood compared with a control product group.

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