COSRX

COSRX is a Korean skincare brand founded in 2013. Its name blends "Cosmetics" with "Rx", the symbol for prescription: every product is meant to answer a specific skin need. The brand describes its approach as gentle skincare designed for sensitive skin. It is based in Seoul, and most of its sales happen abroad, in around 140 countries. Amorepacific took a stake in COSRX in 2021 and later became its majority shareholder. COSRX is now a subsidiary of the group.

The two pillars of COSRX are Advanced Snail and The RX. Advanced Snail is built on snail mucin, a hydrating and soothing ingredient: you will find it in the Advanced Snail Peptide Eye Cream, the Advanced Snail Hydrogel Eye Patch and the Advanced Snail Mucin Glass Glow Hydrogel Mask (3 mask). The RX is the brand's derma line, with one concentrated active per product: The Niacinamide 15 Serum, The Vitamin C 23 Serum, The Alpha-Arbutin 2 Discoloration Care Serum, The Retinol 0.1 Cream and The Peptide 6 Skin Booster Serum.

• 5 PDRN: PDRN and hyaluronic acid for hydration and glow, with the 5 PDRN Collagen Intense Vitalizing Serum.
• Pure Fit Cica: centella asiatica for sensitive skin, from cleansing oil to cream.
• Hydrium: hyaluronic acid hydration, with the Hydrium Triple Hyaluronic Moisturizing Cleanser.
• Full Fit Propolis: propolis for dry or dull skin, with the Full Fit Propolis Synergy Toner.
• Peptide-132: the hair care range launched in 2025, with the Peptide-132 Ultra Perfect Hair Bonding Shampoo and the Peptide-132 Ultra Perfect Hair Bonding Oil Serum.

Oily or blemish-prone skin: the Salicylic Acid Daily Gentle Cleanser morning and night, then the The Niacinamide 15 Serum. Keep Acne Pimple Master Patch for pimples. Sensitive skin or redness: the Pure Fit Cica range, with the Pure Fit Cica Cream, and the Hydrium Centella Aqua Soothing Ampoule. Dry skin: the Hydrium Triple Hyaluronic Moisturizing Cleanser, the The Ceramide Skin Barrier Moisturizer or the Skin Barrier Moisturizing Cream. Dull skin, dark spots, first fine lines: the The Vitamin C 23 Serum in the morning, the The Retinol 0.1 Cream at night, and a sunscreen such as the Ultra-Light Invisible Sunscreen SPF50+ PA++++. When in doubt, patch test a new product on a small area first.

Browse serums, masks, cleansers, creams or hair care. Shopping by skin type? Check our sensitive skin and blemish-prone skin edits. Want to know more? Read our article COSRX: the Korean brand of simple, effective formulas.

COSRX keeps its formulas short: hold on to the actives that do the work and leave out ingredients that could irritate. That is why it became a go-to for sensitive, oily and blemish-prone skin. Product names often tell you exactly what is inside: Niacinamide 15, Vitamin C 23, Retinol 0.1, Alpha-Arbutin 2. You know what you are putting on your skin and why. The brand also develops its own ingredients, such as the tripeptide-132 in its hair care range. Its pimple patches, like the Acne Pimple Master Patch, are also among the most ordered COSRX products on Ma Petite Coree.

On Ma Petite Coree, the most popular COSRX picks are hydrogel masks and patches. Leading the pack: the The Peptide Collagen Lifting Glow Hydrogel Mask -, with peptides and collagen, and the 5 PDRN Hyaluronic Acid Vital Hydrogel Mask. Eye patches are in high demand too: Advanced Snail Hydrogel Eye Patch and The Peptide Collagen Hydrogel Eye Patch. On the serum side, the The Peptide 6 Skin Booster Serum and the The Niacinamide 15 Serum get the most orders. The Acne Pimple Master Patch remains the small buy we recommend most, and the Hydrium Triple Hyaluronic Moisturizing Cleanser is the top-selling COSRX cleanser.