oneskin PREP facial cleanser — gentle fragrance-free gel for sensitive skin, dermatologist-tested and boosts peptide absorption

OneSkin PREP Facial Cleanser is a gentle daily gel cleanser that removes impurities and light makeup while preserving the skin’s natural barrier and supporting better absorption of OneSkin peptide treatments.

PREP is formulated to cleanse without stripping, making it safe for sensitive skin and suitable for all skin types. Dermatologist tested and free of sulfates, fragrances, and harsh detergents, this vegan and cruelty-free cleanser aims to keep the skin balanced while priming it to receive the OS-01 peptide actives more effectively.

How does PREP support better peptide absorption?

Used before OneSkin OS-01 FACE, PREP helps prepare the skin surface so the peptide can penetrate more efficiently. Laboratory studies show an increase in peptide penetration and a meaningful uptick in a hydration biomarker when PREP is used as a preparatory step.

• Shown to increase peptide penetration up to 2x when applied prior to OS-01 FACE
• Associated with a 40% rise in key hydration marker AQP3 in lab tests
• Prepares skin for active ingredients without compromising barrier integrity

Will PREP dry out or irritate sensitive skin?

PREP is formulated as a gentle gel cleanser that avoids common stripping ingredients like sulfates and detergents. It’s fragrance-free and dermatologist tested to minimize irritation and help maintain the skin’s natural lipids and microbiome.

• Free from sulfates and harsh detergents that can strip skin
• Fragrance-free and suitable for all skin types, including sensitive
• Designed to support the skin’s natural balance rather than disrupt it

How should I use PREP in my daily routine?

Apply PREP as your cleansing step both morning and evening to remove impurities, light makeup, and sunscreen. Lather 1–2 pumps in damp hands, massage gently in circular motions on damp skin, then rinse and pat dry before applying serums or creams.

• Lather 1–2 pumps in damp hands until a light foam forms
• Gently massage onto damp skin using circular motions
• Rinse thoroughly and pat skin dry, then follow with OS-01 or other treatments

What clean and ethical standards does PREP meet?

OneSkin PREP aligns with modern clean-beauty expectations: it’s vegan, cruelty-free, and formulated without unnecessary fragrances or stripping agents. The approach focuses on effective cleansing that’s mindful of both skin health and ingredient transparency.

• Vegan and cruelty-free formulation
• Dermatologist tested and fragrance-free
• No sulfates or detergents known to damage the barrier

Who this is for: PREP is for anyone seeking a gentle, effective daily cleanser that removes grime, light makeup, and sunscreen while preserving skin balance. It’s ideal for people with sensitive or reactive skin, those who use peptide serums like OneSkin OS-01 FACE and want to improve absorption, and anyone preferring a clean, vegan, fragrance-free option in their skincare lineup.