oneskin PREP Gentle Gel Cleanser — Fragrance-Free Daily Cleanser for Sensitive Skin, Boosts Peptide Absorption

OneSkin PREP is a gentle daily gel cleanser that removes impurities and light makeup while preserving the skin’s natural barrier and priming skin for better peptide absorption.

Designed to be used before OneSkin OS-01 FACE treatments, PREP cleans deeply without stripping lipids or disturbing the microbiome. Dermatologist-tested and formulated without sulfates, fragrances, or detergents, this vegan, cruelty-free cleanser suits all skin types — including sensitive skin — and supports increased delivery of the OS-01 peptide in laboratory studies.

How does PREP improve peptide absorption for follow-up treatments?

When applied prior to OS-01 FACE, PREP has been shown in lab testing to enhance the penetration of the OS-01 peptide by up to twofold. That improved delivery helps the subsequent product reach target layers more effectively, enabling better interaction with skin biomarkers observed in studies.

• Lab results: up to 2x increase in OS-01 peptide penetration when PREP is used first
• Confirmed effect: linked to a 40% increase in the hydration biomarker AQP3 in lab measurements
• Use order: apply PREP, rinse, then follow with OS-01 FACE for optimal transfer

Will PREP strip or dry sensitive and delicate skin?

PREP is formulated specifically to avoid harsh detergents and sulfates that can remove essential skin lipids. Its gentle gel base cleanses thoroughly while respecting the skin’s natural barrier and microbial balance, reducing the risk of irritation.

• No sulfates, no detergents, and no added fragrance
• Dermatologist tested for use on sensitive skin
• Formulated to maintain natural lipids and microbiome balance

How should I use PREP in my daily routine?

Dispense 1–2 pumps into damp hands, work into a light foam, and massage in gentle circular motions across damp skin. Rinse thoroughly and pat dry, then apply OS-01 FACE or your next skincare step while skin is primed for absorption.

• Morning and evening use: gentle enough for daily cleansing
• Best paired: apply before OneSkin OS-01 FACE for improved peptide delivery
• Quantity: 1–2 pumps per use to create a light foam

What clean, safe ingredients and claims should I expect?

PREP is a clean, vegan, and cruelty-free product with a fragrance-free formula to minimize irritation. It avoids common stripping agents and includes components selected to cleanse without disrupting skin physiology.

• Clean formulation: vegan, cruelty-free, fragrance-free
• Free from sulfates and harsh detergents known to strip skin
• Suitable for all genders and skin types, including sensitive skin

Who is this for? OneSkin PREP is made for anyone seeking a daily cleanser that offers effective removal of sunscreen, light makeup, and daily grime while preserving skin balance and enhancing the performance of follow-up peptide treatments like OS-01 FACE. It’s especially suitable for people who want dermatologist-tested, gentle formulas that pair well with targeted skincare serums and peptides.