C-Tetra Luxe

Name: C-Tetra Luxe
Brand: Medik8
Price: 55 GBP
Availability: InStock

From £55.00

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C-Tetra Luxe is the richer, more nourishing version of Medik8's bestselling vitamin C serum — 14% stable vitamin C in a cushioned, lipid-rich base designed for skin that finds lighter serums insufficient.

It uses the same tetrahexyldecyl ascorbate as the original C-Tetra: an oil-soluble form of vitamin C that penetrates readily, doesn't sting, and doesn't oxidise or destabilise the way traditional L-ascorbic acid serums do. The difference is the base — a more emollient formulation that delivers antioxidant protection and hydration in a single step.

BEST FOR - Dry, dehydrated and mature skin - Dullness and loss of radiance - Uneven skin tone and early pigmentation - Environmental and sun-related damage - Anyone who finds standard vitamin C serums too lightweight - Skin that needs hydration alongside antioxidant protection

KEY INGREDIENTS - Tetrahexyldecyl Ascorbate (14%) — stable, oil-soluble vitamin C at double the strength of standard C-Tetra - Vitamin E — works alongside vitamin C for enhanced antioxidant defence - Squalane — nourishes and cushions - Vitamin F — supports the skin barrier

USAGE INSTRUCTIONS Apply 3–4 drops to clean, dry skin each morning, before moisturiser and SPF. Suitable for daily use.

Always follow with SPF 30 or higher — vitamin C works best alongside sun protection.

C-Tetra — 7% vitamin C in a light oil base. The starting point, and ideal for sensitive or oily skin.
C-Tetra Luxe — 14% vitamin C in a richer, more nourishing base. Best for dry, dehydrated or mature skin, and for anyone wanting hydration alongside antioxidant protection.
C-Tetra Advanced — 20% vitamin C with phyto exosomes. The strongest in the range, for established users wanting maximum brightening.
Will it sting? No. This form of vitamin C is non-acidic and doesn't sting on application, unlike L-ascorbic acid serums.
Is it too rich for oily skin? If your skin is oily or congested, standard C-Tetra is the better fit. Luxe is formulated for skin that needs more.
Can I use it with Crystal Retinal? Yes — vitamin C in the morning, vitamin A at night. This is Medik8's CSA approach and the two work well together.
Does it need refrigerating? No. This form of vitamin C is stable and doesn't oxidise like traditional serums.
Can I use it in pregnancy? Vitamin C is generally considered suitable. If in doubt, check with your midwife.

C-Tetra Luxe

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