COSRX
COSRX The 6 Peptide Skin Booster Serum 150ml
Ships within 24-48 working hours
A water-textured serum, as light as a toner, that slots in as the very first step after cleansing.
Why we love it
Formulated with six selected peptides: the signal peptide family has the strongest clinical evidence among anti-aging actives, even though skin penetration remains a documented limitation for larger molecules. The large 150 ml format and watery texture allow generous application, morning and evening, without counting drops — the Korean "booster" spirit, where consistency matters more than concentration. A base designed to prep the skin before the next essence or serum, in the skip-care spirit.
How to use it
Apply morning and evening, as the very first step after cleanser, before essence or cream, patting in with your hands or a cotton pad. Expert note: copper peptides should not be applied at the same time as pure vitamin C or a direct acid (a reaction that degrades both actives) — separate these steps between morning and evening instead. Compatible with niacinamide, hyaluronic acid and ceramides.
Who it's for
Skin that wants a first approach to peptides without a rich texture, combination to oily skin looking for a lightweight anti-aging step, and skin that cannot tolerate retinoids. Suitable for sensitive skin. Find our signs of aging selection.
Authenticity & compliance
Genuine Korean skincare, bought from professional distributors based in the EU. Every product carries EU-compliant labelling.
Shipping & returns
Shipped within 24 to 48 working hours from France. Shipping calculated at checkout (United Kingdom and United States: €29, converted into your currency). 14-day right of withdrawal, even if the box is opened (except unsealed products), and returns of unopened products up to 30 days. Damaged product or mistake on our side: write to us as soon as possible (ideally within 48 h) with a photo and we'll reship or refund.
SHIPPING CALCULATED AT CHECKOUT
SHIPPED WITHIN 24-48 H
30-DAY RETURNS
AUTHENTIC PRODUCTS
SECURE PAYMENT
Frequently asked questions
How do I choose the right product?
Start from your main concern: sensitive skin, dark spots, dryness, acne or signs of ageing. Our collections are organised by concern, routine step and ingredient. If in doubt, write to us: we reply within one working day.
How soon will I see results?
It depends on the product and your skin. Hydrating and soothing products work from the first application; actives such as niacinamide, retinol or vitamin C require regular use over several weeks.
What are the delivery times?
Orders ship within 24 to 48 working hours from France. The estimated delivery time is shown at checkout depending on your country. Shipping calculated at checkout (United Kingdom and United States: €29, converted into your currency).
Can I return a product?
Yes: you have 14 days after delivery to withdraw, even if the box has been opened (except for a product whose hygiene seal has been removed), and 30 days to return an unopened product in its original packaging. Refunds and the withdrawal form: see our refund policy.
Are the products authentic?
Yes. We sell genuine Korean skincare, bought from professional distributors based in the EU. Every product carries EU-compliant labelling.
Need help?
Our team replies by email within one working day, Monday to Friday.