Name: COSRX 6 Peptide Booster
Brand: COSRX
Price: 33.99 GBP
Availability: InStock

Multi-peptide care for firmer, smoother and more radiant-looking skin

COSRX The 6 Peptide Skin Booster Serum 150ml is a lightweight Korean first-step serum designed to target multiple skin concerns at once, including dehydration, uneven texture, visible pores, dullness and loss of firmness.

Powered by a 6 Peptide Complex, alongside Niacinamide, Hyaluronic Acid, Amino Acids and Adenosine, the formula helps improve hydration, elasticity and overall skin texture while preparing the skin for the next steps in your routine.

Key Benefits

• Helps improve skin firmness and elasticity.

• Helps smooth uneven and rough-looking texture.

• Supports the appearance of refined pores.

• Provides lightweight, lasting hydration.

• Helps improve dull and uneven-looking skin tone.

• Supports a stronger, healthier-looking skin barrier.

• Helps improve the appearance of fine lines.

• Lightweight, non-sticky toner-like texture.

• Prepares the skin for subsequent serums and moisturisers.

• Suitable for all skin types, including sensitive and blemish-prone skin.

Key Ingredients

6 Peptide Complex

A carefully selected combination of six peptides designed to address multiple concerns, including firmness, elasticity, pores, texture, radiance and overall skin condition.

Hyaluronic Acid

Helps attract and retain moisture within the skin, supporting lasting hydration and a softer, plumper appearance.

Niacinamide

Helps improve the appearance of dullness and uneven skin tone while supporting smoother, more balanced-looking skin.

Adenosine

Helps support skin elasticity and improve the appearance of fine lines.

Natural Moisturising Factors & Amino Acids

Help maintain moisture and support the skin barrier for a hydrated, comfortable complexion.

Suitable For

• Normal skin

• Dry skin

• Dehydrated skin

• Combination skin

• Oily skin

• Sensitive skin

• Blemish-prone skin

• Visible pores

• Uneven skin texture

• Dull-looking skin

• Fine lines and early signs of ageing

• Loss of firmness and elasticity

How to Use

Use immediately after cleansing as the first treatment step of your skincare routine.

Apply 2–3 pumps evenly over the face and gently pat into the skin until absorbed.

Follow with your preferred essence, ampoule or serum, then finish with moisturiser.

Use morning and evening. During your morning routine, finish with sunscreen.

The lightweight formula is specifically designed to work as a first-step booster before other skincare treatments.

Why Choose COSRX?

COSRX is a South Korean skincare brand recognised for ingredient-focused formulas designed to address specific skin concerns through straightforward everyday routines.

Unlike a traditional serum focused on a single concern, The 6 Peptide Skin Booster Serum combines six peptides with hydrating and skin-conditioning ingredients to provide multi-purpose care for hydration, texture, firmness, pores and radiance.

COSRX also reports clinical testing showing improvements in hydration, texture, clarity, radiance and skin density after consistent use. The formula has additionally undergone sensitive-skin irritation and non-comedogenic testing.

Frequently Asked Questions

What does COSRX The 6 Peptide Skin Booster Serum do?

It is a multi-purpose first-step serum designed to improve hydration, firmness, texture, radiance and the appearance of pores while preparing the skin for subsequent skincare products.

Does it contain six different peptides?

Yes. The formula contains a six-peptide complex including Acetyl Hexapeptide-8, Copper Tripeptide-1, sh-Polypeptide-121, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Oligopeptide-68 and Palmitoyl Tripeptide-8.

When should I apply it?

Apply it immediately after cleansing, before thicker essences, ampoules, serums and moisturisers. COSRX describes it as a first-step serum with a lightweight, toner-like consistency.

Is it suitable for sensitive skin?

Yes. COSRX states that the formula has undergone sensitive-skin irritation testing and is suitable for sensitive skin.

Is it suitable for blemish-prone skin?

Yes. The product has been non-comedogenic tested on blemish-prone skin, according to COSRX.

Can I use it every day?

Yes. It can be incorporated into both morning and evening skincare routines.

Can I use it with Snail Mucin?

Yes. COSRX recommends applying the Peptide Skin Booster first, allowing it to absorb, and then following with a snail mucin product such as the Advanced Snail 96 Mucin Power Essence.