COSRX

The 6 Peptide Skin Booster Serum

The COSRX The 6 Peptide Skin Booster Serum is an ultra-lightweight, multi-tasking first-step prep serum designed to supercharge the results of your entire skincare routine. Combining a high-performance matrix of six distinct peptides, it instantly absorbs like water to simultaneously target elasticity, fine lines, pore tightening, texture refinement, tone brightness, and barrier soothing.

Content/Format

150ml
Skin Type

Acne, Combination Skin, Mature Skin, Sensitive Skin
Routine Step

3. Serum
Cruelty-free

Yes

€ 19,95

This innovative jumbo-sized serum acts as an absolute amplifier for your skin barrier.

Instead of layering multiple dense serums to target separate issues, COSRX blends six highly specialized peptides into a single, water-light formula. It functions on a cellular level to wake up tired skin cells, jump-starting collagen production and regulating texture immediately after cleansing. Because its viscosity is incredibly low, it sweeps effortlessly across the skin matrix, leaving behind no heavy residue or oil.

It hydrates dry layers with Hyaluronic Acid and Allantoin, while working systematically to smooth rough dry patches, reduce the look of stretched pores, and revive natural radiance—leaving your face feeling exceptionally soft, bouncy, and perfectly prepped.

Ideal for: Multi-Benefit Skin Boosting, Elasticity & Firming Support, Pore & Texture Refinement, First-Step Routine Priming, Deep Fluid Hydration.

  1. Use AM and PM as the very first step of your skincare routine, immediately after cleansing (before toner or other serums).
  2. Dispense 2–3 pumps into your palms and smooth it evenly over your entire face and neck.
  3. Gently pat the watery fluid into the skin until completely absorbed.
  4. Follow up directly with your favorite toner, targeted treatment serums (like Vitamin C, Retinol, or Niacinamide), and moisturizer. The booster creates microscopic pathways that help these next products penetrate deeper and work faster.

Water, Dipropylene Glycol, Glycerin, Pentylene Glycol, Niacinamide, Hexapeptide-9, SH-Oligopeptide-1, SH-Oligopeptide-2, SH-Polypeptide-1, SH-Polypeptide-9, SH-Polypeptide-11, Copper Tripeptide-1, Anemarrhena Asphodeloides Root Extract, Acetyl Hexapeptide-8, Palmitoyl Pentapeptide-4, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Arginine, Aspartic Acid, Glycine, Alanine, Serine, Valine, Proline, Threonine, Isoleucine, Histidine, Phenylalanine, Collagen, Hydrolyzed Collagen, Soluble Collagen, Sodium Hyaluronate, Potassium Hyaluronate, Hydrolyzed Sodium Hyaluronate, Hydroxypropyltrimonium Hyaluronate, Hydrolyzed Hyaluronic Acid, Hyaluronic Acid, Sodium Hyaluronate Crosspolymer, Sodium Acetylated Hyaluronate, Adenosine, Hydrogenated Lecithin, Butylene Glycol, PVM/MA Copolymer, Sodium Polyacrylate, Caprylyl Glycol, PEG-40 Hydrogenated Castor Oil, PPG-26-Buteth-26, 1,2-Hexanediol, Ethylhexylglycerin.

COSRX (derived from “Cosmetics” and “RX” for prescription) is a beloved Korean skincare brand renowned for its straightforward, effective, and ingredient-focused approach to common skin concerns. With a strong emphasis on minimalist formulations and high concentrations of active ingredients, COSRX provides targeted solutions for acne, sensitivity, hydration, and more.

At the heart of COSRX’s philosophy is a commitment to “skincare that works.” The brand prides itself on transparency, using only essential ingredients and omitting unnecessary additives like artificial fragrances, parabens, and synthetic dyes, making their products highly suitable for sensitive and problematic skin types. Each product is developed with extensive research and customer feedback, ensuring efficacy and user satisfaction.

COSRX has garnered a cult following worldwide for its iconic products, including the Acne Pimple Master Patch for quick blemish control, the Advanced Snail 96 Mucin Power Essence for intense hydration and repair, and the Low pH Good Morning Gel Cleanser for gentle yet effective cleansing. Their accessible prices combined with powerful results have made them a staple in countless skincare routines.

Discover COSRX and embrace a simpler, more effective path to healthier, happier skin.

Key Ingredients

The 6-Peptide Matrix:

An elite peptide powerhouse combining SH-Polypeptide-121, Copper Tripeptide-1, Acetyl Hexapeptide-8, Palmitoyl Tripeptide-5, Palmitoyl Tetrapeptide-7, and Hexapeptide-9 to actively rebuild structural density, smooth dynamic expression wrinkles, and tighten pore lining walls.

Niacinamide (Vitamin B3):

A master skin-brightener that effectively regulates excessive sebum production, treats dullness, and repairs uneven skin tones.

Amino Acid Cluster:

A structural blend of 11 essential amino acids that work synergistically to feed the skin barrier, supporting cellular repair and texture elasticity.

Multi-Weighted Hyaluronic Acid:

Multiple molecular sizes that pull deep hydration into separate layers of the epidermis, plumping dry dehydration lines from within.

Adenosine & Allantoin:

High-performance skin-conditioning agents that instantly soothe environmental stress, calm redness, and speed up micro-recovery loops.

Key Ingredients

The 6-Peptide Matrix:

An elite peptide powerhouse combining SH-Polypeptide-121, Copper Tripeptide-1, Acetyl Hexapeptide-8, Palmitoyl Tripeptide-5, Palmitoyl Tetrapeptide-7, and Hexapeptide-9 to actively rebuild structural density, smooth dynamic expression wrinkles, and tighten pore lining walls.

Niacinamide (Vitamin B3):

A master skin-brightener that effectively regulates excessive sebum production, treats dullness, and repairs uneven skin tones.

Fresh and vibrant close-up of water droplets on a white background, symbolizing purity and hydration.

Amino Acid Cluster:

A structural blend of 11 essential amino acids that work synergistically to feed the skin barrier, supporting cellular repair and texture elasticity.

Multi-Weighted Hyaluronic Acid:

Multiple molecular sizes that pull deep hydration into separate layers of the epidermis, plumping dry dehydration lines from within.

Adenosine & Allantoin:

High-performance skin-conditioning agents that instantly soothe environmental stress, calm redness, and speed up micro-recovery loops.

Linked Products:

  • Mung Bean Greenful pH Balanced Cleansing Foam

    Mung Bean Greenful pH Balanced Cleansing Foam

    € 17,95
  • Sale! Revive Firming Moisturizer

    Revive Firming Moisturizer

    Original price was: € 21,95.Current price is: € 19,75.
  • Mung Bean Pore Tight-Up Serum

    Mung Bean Pore Tight-Up Serum

    € 20,95
  • TXA Niacinamide Capsule Cream

    TXA Niacinamide Capsule Cream

    € 28,95
  • Niacinamide 10%+TXA 4% Serum

    Niacinamide 10%+TXA 4% Serum

    € 24,95
  • Sale! Birch Juice Moisturizing Sun Cream

    Birch Juice Moisturizing Sun Cream

    Original price was: € 15,95.Current price is: € 14,35.