COSRX The 6 Peptide Skin Booster Serum 150ml

A 6-peptide booster serum that builds skin resilience from the ground up

This is a generous 150ml booster serum designed to be used right after cleansing, as the very first step in your routine. It features six types of peptides that work together to address six key skin concerns: elasticity, texture, tone, redness, fine lines, and pores and sebum. The formula also includes hyaluronic acid for hydration, niacinamide for tone correction, adenosine for elasticity and wrinkle care, allantoin for soothing, and N-acetylglucosamine for gentle exfoliation. It's a dual-functional cosmetic recognized for both wrinkle improvement and brightening.

Clinically proven skin improvements

In a 4-week clinical study conducted on 20 adults aged 20 to 59, the following improvements were observed:

• Hydration +162.50%
• Skin texture (unevenness) -76.41%
• Skin density +22.22%
• Skin brightness +37.99%
• Luminosity +40.11%

In a separate study on acne-prone skin, results showed a reduction of blackheads by -21.95%, whiteheads by -20.91%, excess sebum by -29.48%, and oiliness by -33.34%. The serum has also completed non-comedogenic testing and a low-irritation test on sensitive skin, making it suitable for all skin types.

Generous size for daily layering without worry

At 150ml, this serum is sized to last even with generous morning and evening application. It works beautifully as a daily staple regardless of skin type, season, or weather, and when used before vitamin C serums or retinol creams, it helps boost the absorption of the products that follow. Especially recommended for those dealing with dehydration beneath the surface or looking to improve skin firmness and texture.

Use it right after cleansing, in place of toner

This is a booster serum designed to replace toner in your skincare routine. For best absorption, apply it as the very first step on freshly cleansed, bare skin. Follow with your usual ampoule or serum to help boost the efficacy of the next steps in your routine.

Safe for daily use, morning and night

Formulated with 6 peptides, hyaluronic acid, and niacinamide, and free from harsh ingredients, it's gentle enough for twice-daily use. Non-comedogenic tested, so it's suitable for acne-prone skin as well.

150ml generous size, perfect for layering

Dispense an appropriate amount into your palms and gently smooth over skin following the natural texture. Pat lightly to help absorption. If your skin feels dehydrated or you want an extra moisture boost, the key is to layer it 2 to 3 times. The generous 150ml size makes layering easy and economical.

Recommended pairings by skin concern

• Dark spots and tone-evening: Pair with a vitamin C serum for brightening synergy
• Fine lines and firmness: Use before your retinol cream in your evening routine
• Pores and sebum control: Combine with a niacinamide serum to help regulate oil production
• Hydration and barrier support: Layer with a hyaluronic acid serum for an extra moisture surge

Use caution when combining with high-strength actives

Because this serum contains niacinamide, layering it with high-concentration vitamin C or retinol at the same time may cause irritation. We recommend using vitamin C in the morning and retinol in the evening to separate application times. Store in a cool place away from direct sunlight, and if you experience redness or irritation, discontinue use and consult a dermatologist.

Product ingredients list.

The list of ingredients is subject to change. Please consult the packaging of the product purchased.