Medik8 C-Tetra Luxe Vitamin C Serum 1.0 fl oz — Stabilized Vitamin C with Squalane & Vitamin E for Lightweight Daily Brightening

This advanced serum pairs a stable form of vitamin C with hydrating squalane and antioxidant vitamin E to help support smoother-looking skin and a more even texture when used as part of a daily routine. Designed for morning application, the formula absorbs quickly, layers comfortably under SPF, and is both vegan and gluten-free. Its lightweight feel is intended to suit a variety of skin types without leaving a heavy residue.

How does this serum fit into my morning routine?

Apply C-Tetra Luxe after cleansing and before moisturizer and sunscreen. The fast-absorbing texture allows it to sit under SPF without pilling, and its antioxidant ingredients are most effective when used during the day to support skin exposed to environmental stressors.

• Use 2–3 drops applied to face and neck after cleansing.
• Wait a minute for absorption before layering moisturizer and SPF.
• Best used in the AM to maximize daytime antioxidant support.

What benefits can I expect from vitamin C, squalane, and vitamin E together?

Vitamin C works as a stabilised brightening agent while vitamin E supports antioxidant protection, and squalane replenishes moisture for a soft, balanced finish. Together they address surface texture and hydration without heavy oils that can feel greasy.

• Stabilized vitamin C for daily brightening support.
• Vitamin E adds antioxidant synergy with vitamin C.
• Squalane provides lightweight, lasting hydration and barrier comfort.

Is this serum suitable for sensitive or combination skin?

C-Tetra Luxe is formulated to be lightweight and non-greasy, which typically suits combination and oily skin; many with sensitive skin can also tolerate it, but patch testing is recommended. Because vitamin C can cause temporary tingling for some users, start with alternate-day use if you have sensitivity concerns.

• Light, non-comedogenic texture that layers well under other products.
• Vegan and gluten-free formulation reduces common allergen concerns.
• Begin gradually to assess tolerance if you have reactive skin.

How long until I see improvements in skin tone and texture?

Visible improvements depend on individual skin and consistency; many users notice smoother appearance and more even tone after several weeks of daily use. Continued use supports ongoing antioxidant protection and hydration that can help maintain results over time.

• Initial hydration and smoother feel often noticed within days.
• More pronounced brightening and texture improvement typically occur over weeks.
• Consistency—daily morning application—yields the best outcomes.

Who is this for: Medik8 C-Tetra Luxe is designed for anyone seeking a lightweight, daily antioxidant serum that combines stabilized vitamin C with moisturizing squalane and vitamin E. It suits those wanting a fast-absorbing product to layer under sunscreen, people with combination to normal skin types, and users preferring vegan and gluten-free skincare. If you have very reactive skin, consider patch testing or introducing the product gradually into your routine.

Ingredients

Squalane, Simmondsia Chinensis (Jojoba) Seed Oil, Tetrahexyldecyl Ascorbate, Dimethicone, Candida Bombicola/Glucose/Methyl Rapeseedate Ferment, Citrus Grandis (Grapefruit) Peel Oil, Ethyl Linoleate, Passiflora Edulis Seed Oil, Tocopheryl Acetate, Helianthus Annuus (Sunflower) Seed Oil, Olea Europaea (Olive) Fruit Oil, Panax Ginseng Root Oil, Prunus Amygdalus (Sweet Almond) Dulcis Oil, Prunus Armeniaca (Apricot) Kernel Oil, PPG-12/SMDI Copolymer, Limonene, Citral, Linalool, Geraniol.