COSRX The 6 Peptide Skin Booster Serum 150mL

Most serums incorporate only one or two peptides, often targeting a single concern. COSRX The 6 Peptide Skin Booster Serum features a precisely curated complex of six distinct peptides — each selected for a different function, including firming, pore refinement, sebum control, brightening, soothing, and texture improvement. The result is a true multi-concern formula that replaces several single-purpose products in one elegant, lightweight step.

Yes. The formula has been independently tested and certified as suitable for sensitive skin (Primary and Sensitive Skin Irritation Tested) and has passed Non-Comedogenic Testing on acne-prone skin. The inclusion of Allantoin and Palmitoyl Tripeptide-8 further supports a calming, tolerability-focused formula. As with any new skincare product, a patch test prior to full application is always recommended.

This product is designed to function as your first active step after cleansing — applied in the same step as a toner or essence, before any ampoules, targeted serums, or moisturisers. Its toner-like, ultra-fluid texture ensures seamless layering without pilling or disrupting subsequent products. It is suitable for use in both morning and evening routines.

Clinical trials conducted over approximately six weeks demonstrated measurable improvements in hydration, texture, clarity, radiance, and skin density. While individual skin types and conditions vary, consistent daily use — both morning and evening — is recommended to achieve optimal, visible results. Many users report an immediate improvement in skin softness and a dewy, plumped appearance after the first few applications.

Peptides are generally well-tolerated alongside most other skincare actives. However, to minimise potential sensitivity, it is advisable to introduce any new product gradually into your routine. If you are currently using high-strength exfoliants, Vitamin C, or retinol, consider alternating usage or applying this serum during the opposite routine (e.g., mornings, while retinol is used in the evening). If in doubt, consult a skincare professional.

Yes, the The 6-Peptide Skin Booster Serum is designed to be both fragrance-free and vegan-friendly:


FRAGRANCE-FREE: This serum is formulated without added synthetic fragrances. It is an ideal choice for those with sensitive skin or those who prefer skincare products without a scent. The clean formula focuses purely on delivering the benefits of our unique 6-peptide complex to improve skin texture and overall vitality.


VEGAN-FRIENDLY: We are proud to confirm that this product is vegan. It does not contain any animal-derived ingredients or by-products. By using plant-based and skin-friendly components, we ensure that our booster serum aligns with ethical beauty standards while providing comprehensive conditioning for a healthy-looking complexion.