Skip to content
COSRX The Vitamin C 23 Serum 20ml

COSRX The Vitamin C 23 Serum 20ml

COSRX The Vitamin C 23 Serum is a highly concentrated facial treatment designed to brighten and revitalise the complexion. With 23% pure vitamin C, this serum targets dull skin, helping to diminish the appearance of uneven tone and discolouration. The formula is enriched with an antioxidant-rich vitamin E derivative, which enhances the effects of vitamin C while delivering hydration and a visibly plumping effect. This results in a smoother, more supple, and radiant skin appearance. The serum is ideal for daily use and is particularly suited to those with dull or uneven skin tones. Its lightweight texture absorbs quickly, making it easy to incorporate into any skincare routine. The product is formulated to promote a healthier-looking complexion over time, with consistent use. It is free from parabens, sulfates, and phthalates, making it a gentle yet effective option for most skin types. COSRX The Vitamin C 23 Serum is best suited for individuals looking to address signs of fatigue or uneven skin tone. It can be used as part of a morning or evening routine, applied after cleansing and before moisturising. The 20ml bottle is compact and travel-friendly, ensuring you can maintain your skincare regimen wherever you go.
Compare prices from £26.35 to £31.95
Save £5.60 (18%)
4.1 / 5(33 reviews)
8809598454972
2 retailers
Lookfantastic Product reviews 3.8 (12) Best price
£26.35 (incl. £3.95 delivery)
Out of Stock Free delivery over £25.00 Click & collect
Retailer information

We checked this product from this store on 19 Feb 2026 at 23:11.

Delivery

Cost
£3.95
Free over
£25.00
Eco delivery
Eco Delivery

Collection & in-store

Click & collect
Available
Fee
£3.95
Availability
Available online only
Open retailer
Cult Beauty Product reviews 4.2 (21)
£31.95 (incl. £3.95 delivery)
Out of Stock 30 days returns Click & collect
Retailer information

We checked this product from this store on 17 Feb 2026 at 14:23.

Delivery

Cost
£3.95
Eco delivery
Eco delivery option available for £3.95.

Returns & refunds

Return window
30 days
Methods
Postal returns via carrier selected through ZigZag portal.
Refund
3-5 working days
Policy
Returns accepted within 30 days of receipt, items must be in pristine condition.

Collection & in-store

Click & collect
Available
Fee
£3.95

Support

Contact
Contact via online customer service link.
Self-service
Return registration via ZigZag portal.
Open retailer

* Price may not include delivery when not stated by the retailer. Prices may have changed since we last checked. We are not liable for any errors or omissions; please confirm price, availability and terms with the retailer before purchasing.

Page last updated: 19 Feb 2026, 23:11