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COSRX The 6 Peptide Skin Booster Serum is designed for people looking to address multiple skin concerns at once—fine lines, uneven tone, pores, and sebum control—using a lightweight first-step serum with six peptide complexes. The 150ml formula absorbs quickly without stickiness and is dermatologically tested, making it compatible with most active ingredients in your routine. With consistent use, it helps support firmer, smoother-looking skin.
The COSRX 6 Peptide Skin Booster Serum is a powerhouse first-step serum formulated with six distinct peptide complexes, each targeting a different skin concern, to deliver comprehensive skin renewal in a single, lightweight formula. Designed to boost collagen production, brighten uneven skin tone, minimize the appearance of pores and fine lines, and regulate sebum, this 150ml serum absorbs instantly without any stickiness, leaving skin visibly firmer, smoother, and more radiant with consistent use. Dermatologically tested and compatible with a wide range of active ingredients, it seamlessly integrates into any skincare routine as the ideal foundation layer for a healthier, more youthful complexion.
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COSRX is a Korean skincare brand dedicated to solving real skin concerns through ingredient-focused formulations and dermatological expertise. The brand's philosophy centers on understanding individual skin needs—from acne and sensitivity to aging and hydration—offering targeted solutions backed by science. As the official store, COSRX guarantees authenticity and provides tools like their Skin Quiz and Routine Builder to help customers find their perfect regimen.
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A blend of six different peptides (Acetyl Hexapeptide-8, Copper Tripeptide-1, sh-Polypeptide-121, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Oligopeptide-68, and Palmitoyl Tripeptide-8) that work together to improve skin firmness, elasticity, and reduce the appearance of fine lines and wrinkles.
A powerful humectant that holds up to 1000 times its weight in water, providing deep hydration and plumping the skin to reduce the appearance of fine lines and improve skin texture.
Vitamin B3 derivative that boosts radiance, refines pores, strengthens the skin barrier, and helps reduce redness and uneven tone for a smoother, more luminous complexion.
A nucleoside that promotes skin firmness and elasticity while improving skin texture and providing anti-aging benefits through enhanced collagen production.
A humectant and skin-conditioning agent that smooths rough texture, soothes irritation, and enhances skin hydration for a softer, more refined appearance.
1. Use after cleansing as a toner before ampoule, serum or moisturizer. 2. Dispense a few drops and pat gently over the face. 3. Follow with serum and moisturizer.
Specs last updated: May 17, 2026
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