🔒 100% Authentic Cosrx – sourced from authorised distributors, backed by our Money Back Guarantee.
Four chemical exfoliants stacked into one 35-minute mask: AHA to surface, BHA into pores, PHA for sensitive skin, and LHA to catch what the others miss. It's gentler than it sounds — the mixed approach means no single acid is doing all the work.
Apply to clean, dry skin, set a timer for 30 to 35 minutes, rinse with cool water. Once a week maximum, or every other week if your skin is still learning to tolerate it. Skip if you're already using a retinoid the same night.
UK
• Royal Mail 48h – £3.50
• Royal Mail 48h (Free on orders £65+)
• Royal Mail 24h – £4.63
• Royal Mail Next Day (Signed) – £5.19
Europe
• Standard (2–11 business days) – £14.99
International
• Standard (3–17 business days) – £23.99
USA
- Temporary price - due to current custom taxes unfortanelty we have to raise delivery prices to USA - $80
We aim to dispatch 2/3 working days depending on when you order. International customers are responsible for any taxes or duties.
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
