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A daily serum which features a low irritation, stabilized form of vitamin C, tetrahexyldecyl ascorbate. Suitable for all skin types, even the most sensitive, C-Tetra is perfect for those looking to introduce vitamin C into their regime.

Save on C-Tetra™ with a Medik8-US coupon

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The Checkmate extension automatically applies Medik8-US discount codes, Medik8-US coupons and more to give you discounts on products like C-Tetra™.