COSRX The 6 Peptide Skin Booster Serum is a watery, toner-like serum used immediately after cleansing. Its quick-absorbing texture gives skin an early layer of moisture while helping it feel smoother and look more refreshed, without the weight of a traditional serum. The 150ml pump bottle is designed for daily use, morning or night, before essences, ampoules, moisturizers, or sunscreen.
Six peptides sit alongside niacinamide, adenosine, sodium hyaluronate, allantoin, N-acetylglucosamine, and amino acids. Together, the formula is built around visible texture, radiance, firmness, hydration, and the appearance of pores. Natural moisturizing factors help draw water toward the skin's surface, while the lightweight base layers cleanly under richer steps.
This is a flexible choice for normal, dry, oily, combination, or sensitive skin, especially when dullness, dehydration, rough texture, visible pores, or early fine lines are the concern. It works best as a prep step rather than a rich standalone layer, so very dry skin should still follow with moisturizer. COSRX reports measured improvements across moisture, texture, clarity, radiance, and density in testing of this exact serum; steady use matters more than expecting an overnight transformation.
Learn moreA light first layer that brings together hydration, smoother texture, brighter tone, and firmness-focused care without heaviness.
Helps visibly brighten uneven tone and support the skin barrier.
Some exact peptide forms may support smoother, firmer-looking skin; evidence varies by peptide and formula.
Helps hydrate and visibly plump the skin.
Based on COSRX's 2023 Dermacosmetic Skin Science Laboratory clinical trial. Individual results may vary.
Skin drinks in each layer yet still feels tight or looks flat before the day is over.
A rough, uneven surface that catches light and makes makeup sit less smoothly.
A tired-looking tone that seems muted even when the rest of your routine is consistent.
Pores that look more noticeable when oil, dryness, and uneven texture overlap.
Early creases that become easier to see when skin looks dry or less springy.
Natural moisturizing factors and hyaluronic acid add water without a heavy serum finish.
Six peptides and niacinamide support a more refined surface with steady daily use.
Buy these products together
This itemCOSRX The 6 Peptide Skin Booster Serum 150ml$25.00
1+1 Aquatica UV Defense Sunscreen OTC$46.00
100 Reedle Shot Stick Pouch$11.52Total price: $82.52
This itemCOSRX The 6 Peptide Skin Booster Serum 150ml$25.001+1 Aquatica UV Defense Sunscreen OTC$46.00100 Reedle Shot Stick Pouch$11.52Total price: $82.52
Niacinamide and N-acetylglucosamine help tired-looking tone appear more even.
The toner-light fluid settles quickly before ampoules, creams, makeup, or sunscreen.
Peptides and adenosine support a supple look as early fine lines become noticeable.
