Peptide Skincare & BeautySkin science and ingredient guides

Ingredient or product comparison

Medik8 C-Tetra™ Advanced Gel-Serum Versus Allies of Skin 20% Vitamin C Brighten + Firm Serum

This brightening serum is formulated around Tetrahexyldecyl Ascorbate and Acetyl Glucosamine to brighten dull-looking skin and soften the look of wrinkles. This brightening serum is formulated around 3-O-Ethyl Ascorbic Acid and Glutathione to brighten dull-loo

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  • This brightening serum is formulated around Tetrahexyldecyl Ascorbate and Acetyl Glucosamine to brighten dull-looking skin and soften the look of wrinkles.
  • This brightening serum is formulated around 3-O-Ethyl Ascorbic Acid and Glutathione to brighten dull-looking skin.