Medik8 C-Tetra serum

C-Tetra is a cult-favorite vitamin C serum formulated with 7% tetrahexyldecyl ascorbate, a stable and lipid-soluble form of vitamin C that penetrates the skin effectively while remaining gentle even for sensitive skin types. This powerful antioxidant helps protect the skin from free radical damage caused by UV exposure and environmental pollution while stimulating collagen production to soften the appearance of fine lines. The formula is enriched with vitamin E, which works synergistically with vitamin C to strengthen antioxidant protection and support the skin barrier. The silky oil-based texture absorbs quickly and nourishes the skin without leaving a heavy or greasy residue, leaving the complexion smoother, brighter and more radiant. With regular use, skin tone becomes more even and the skin appears healthier and revitalized.

Ideal for:
Dull and tired-looking skin
Uneven skin tone
Early signs of aging
Sensitive skin beginning vitamin C
Dry and normal skin types
Daily antioxidant protection

How to use:
Apply 4–6 drops to clean skin in the morning and gently massage into the face, neck and décolleté before moisturizer. Follow with SPF during the day to enhance protection against environmental damage and maintain a brighter, more even complexion.