COSRX ABC Vitamin Serum Set

Description

Every skin has different needs at different times. Some days your skin needs renewal, some days it needs balancing, and sometimes it simply needs a brighter, healthier glow. The COSRX ABC Serum Set brings together three of the most important skincare vitamins and actives — Vitamin A, Vitamin B and Vitamin C — allowing you to customise your routine depending on what your skin needs most.

Great value: Save £12.95 compared to buying each separately, a saving of 19%!

This targeted treatment trio is designed to help support smoother texture, clearer pores, improved brightness and healthier-looking skin overall. Rather than overwhelming the skin with too many actives at once, this set lets you introduce each ingredient strategically for smarter, more effective skincare.

The ABCs of Better Skin

Vitamin A — COSRX The Retinol 0.5 Oil (20ml)

Your skin renewal and anti-ageing step.

Retinol helps support collagen production, smooth fine lines, refine texture and improve firmness. Ideal when skin feels rough, uneven or in need of renewal.

Best for:

• Fine lines & wrinkles
• Uneven texture
• Loss of firmness

Vitamin B — COSRX The Niacinamide 15 Serum (20ml)

Your balancing and pore-refining step.

Niacinamide helps regulate excess oil, minimise the appearance of pores and support the skin barrier while improving overall clarity.

Best for:

• Oily or congested skin
• Enlarged pores
• Redness & uneven tone

Vitamin C — COSRX The Vitamin C 13 Serum (20ml)

Your glow and brightening step.

Vitamin C helps brighten dull skin, improve uneven tone and support antioxidant protection against environmental stress.

Best for:

• Dullness
• Pigmentation
• Tired-looking skin

How to Use

These serums can be rotated depending on your skin’s needs rather than used all at once.

When to Use:

• Retinol (Vitamin A): Evening only, 2–3 times per week
• Niacinamide (Vitamin B): Morning or evening for balancing care
• Vitamin C: Morning for daily brightening and antioxidant support

Always wear SPF during the day when using retinol or vitamin C.