Medik8 C-Tetra Cream™

Medik8 C-Tetra Cream is a lightweight vitamin C day moisturiser formulated with 3% stabilised tetrahexyldecyl ascorbate. It works to brighten dull skin, smooth the appearance of fine lines, and protect against environmental damage caused by pollution and UV exposure. The addition of hyaluronic acid and vitamin E provides hydration and enhanced antioxidant defence for a radiant, youthful-looking complexion.

Yes. C-Tetra Cream uses tetrahexyldecyl ascorbate, a low-irritation, lipid-soluble form of vitamin C that is far gentler than traditional L-ascorbic acid. This makes it an excellent choice for sensitive skin types who want the benefits of vitamin C without the risk of redness or irritation. Medik8 recommend performing a patch test at least 24 hours before first use if you are new to the product.

C-Tetra Cream is specifically designed as the perfect introduction to vitamin C skincare. The stabilised, low-irritation formula delivers serum-strength antioxidant benefits in a gentle, nourishing cream that won't overwhelm skin that's new to active ingredients. If you've never used vitamin C before, this is an ideal starting point.

C-Tetra and C-Tetra Luxe are Medik8's original best-selling vitamin C serums, while C-Tetra Cream brings the same renowned C-Tetra technology into a silky and nourishing cream format. The cream provides the same antioxidant protection with added moisturising benefits, making it ideal for those who prefer an all-in-one vitamin C moisturiser rather than layering a separate serum and cream.

Absolutely. In fact, Medik8 recommend it as part of their pioneering CSA Philosophy, which champions vitamin C plus sunscreen by day and vitamin A (retinoid) by night as the simple secret to glowing, youthful-looking skin. Apply C-Tetra Cream each morning and reserve your retinoid product for your evening routine.

Yes. The 3% stabilised vitamin C in C-Tetra Cream works to visibly brighten the skin tone for a more even appearance with less visible discolouration. With consistent daily use, you can expect to see a more luminous, even complexion as the vitamin C helps to tackle the appearance of dark spots and dullness over time.

C-Tetra Cream harnesses the power of Medik8's renowned C-Tetra technology in a silky and nourishing cream. Daily Radiance Vitamin C does exactly the same but also offers the additional benefit of SPF 30 protection for a more concise morning regime. If you already use a separate sunscreen, C-Tetra Cream is the ideal choice; if you prefer an all-in-one product with built-in sun protection, Daily Radiance Vitamin C may suit you better.

As a cosmetics company, Medik8 are unable to provide product advice in relation to medical conditions such as pregnancy. They recommend discussing the ingredients with your GP or midwife before use. As general guidance, this product does not contain any ingredients which Medik8 would recommend avoiding during pregnancy, unless advised by your doctor.

Many vitamin C products use L-ascorbic acid, which is notoriously unstable and can oxidise when exposed to light, heat, or air — often turning yellow and losing effectiveness. C-Tetra Cream uses tetrahexyldecyl ascorbate, an extremely stable, lipid-soluble form of vitamin C. This means the formula stays as potent and effective six months after you first open it, delivering consistent results without degradation.