# OneSkin

> OneSkin is a San Francisco biotech and direct-to-consumer skincare company founded by four Brazilian women scientists who set out to slow skin aging at the molecular level. Its flagship OS-01 peptide - identified from a library of 900+ candidates using computational screening and tested on lab-grown human skin models - targets senescent 'zombie' cells that drive wrinkles, thinning and loss of firmness. The company sells topical 'supplements' for the face, eyes, body and sun protection, and frames skin not as a cosmetic surface but as the body's largest organ and a lever on overall healthspan.

- **Founded:** 2016
- **Headquarters:** San Francisco, California, United States
- **Founders:** Carolina Reis Oliveira (Co-Founder & CEO), Alessandra Zonari (Co-Founder & Chief Scientific Officer), Mariana Boroni (Co-Founder (Bioinformatics / Genomics)), Juliana Carvalho (Co-Founder)
- **Team size:** ~63 employees
- **Products:** OS-01 FACE, OS-01 EYE, OS-01 BODY, OS-01 SHIELD (SPF), PREP Cleanser
- **Notable:** Developed the OS-01 peptide from a computational screen of 900+ candidate peptides., Holds 17 patents and has published multiple peer-reviewed studies on its peptide technology., Built and validated products using animal-free, lab-grown human 3D skin models.

## Products & services

- **OS-01 FACE** — Topical 'supplement' / moisturizer powered by the OS-01 peptide, formulated to target skin aging at the cellular level.
- **OS-01 EYE** — Eye cream with the highest concentration of the OS-01 peptide for the delicate under-eye area.
- **OS-01 BODY** — Body lotion using the OS-01 peptide; studies report reduced inflammation and a strengthened skin barrier.
- **OS-01 SHIELD (SPF)** — Mineral sunscreen combining UV protection with the OS-01 peptide.
- **PREP Cleanser** — Gentle facial cleanser rounding out the OneSkin routine.

## Achievements

- Developed the OS-01 peptide from a computational screen of 900+ candidate peptides.
- Holds 17 patents and has published multiple peer-reviewed studies on its peptide technology.
- Built and validated products using animal-free, lab-grown human 3D skin models.
- Raised roughly $60M total, including two $20M Series A milestones (2024 and 2025).
- Attracted investors spanning Unilever Ventures, SOSV, Prelude Growth Partners and notable individuals.

## Latest updates

- **2025-08** — Prelude Growth Partners invested $20M to accelerate OneSkin's skin-longevity growth, replacing an early seed investor.
- **2025-01** — Published clinical research on the OS-01 peptide formulation for reducing signs of periorbital (eye-area) skin aging.
- **2024-11** — Closed Series A round bringing brand funding to $20M, with investors including Selva Ventures, Unilever Ventures, Kevin Rose and Camila Alves McConaughey.

## Links

- Website: https://oneskin.co
- LinkedIn: https://www.linkedin.com/company/oneskin
- Twitter/X: https://twitter.com/OneSkinTech
- Instagram: https://www.instagram.com/oneskin.co/
- Facebook: https://www.facebook.com/OneSkinTech/
- TikTok: https://www.tiktok.com/@oneskin.co

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Profile page: https://yespress.io/oneskin
Published by YesPress — https://yespress.io
Last updated: 2026-07-11