Medik8 C-Tetra Advanced (30ml)

C-Tetra Advanced

Defend against premature skin ageing and achieve accelerated skin brightening with a next-generation combination of 20% vitamin C and skin barrier science. Clinically proven to brighten skin and visibly improve wrinkles in 7 days with 0% barrier disruption, C-Tetra Advanced is engineered for high-performance visible brightening, skin smoothing, and daily antioxidant defence.

This intelligent ingredient complex combines potent, stabilised 20% vitamin C with restorative phyto exosomes for deep, controlled delivery and omni-antioxidant acetyl zingerone to neutralise the ageing effects of free radicals.

Key Benefits

• Dramatic Skin Brightening – Clinically proven to visibly brighten skin and even tone in 7 days for a radiant, luminous complexion.

• Enhanced Skin Barrier Support – Phyto exosomes deliver replenishing bioactives rapidly and effectively, ensuring 0% barrier disruption.

• Premature Skin Ageing Defence – Shields skin from damaging free radicals, pollution, and daily environmental stressors.

• Smooth & Even Complexion – Clinically proven to visibly improve skin smoothness and texture in 7 days.

• Lightweight Finish – Fast-absorbing gel-serum texture hydrates, smooths, and primes for an instantly refreshed look.

Proven Results

• 7 days to visibly brighter skin

• 7 days to visibly reduced wrinkles

• 0% barrier disruption

• 7 days to visibly smoother texture

• Reduces 90% of pollution damage to the skin’s surface

Available Strengths
From the gentle, nourishing C-Tetra® (lower strength) to Super C Ferulic™ (higher strength), each formula is crafted for stability and efficacy. C-Tetra Advanced offers 20% stabilised vitamin C with age-defence benefits designed to brighten, smooth, and support the skin barrier without disruption.

How to Use
Apply as part of your morning skincare routine: massage 2–3 pumps across the face, neck, and décolletage. Follow with moisturiser and always finish with sunscreen.

Key Ingredients

• 20% Stabilised Vitamin C (Tetrahexyldecyl Ascorbate): Potent yet gentle form of vitamin C for brightening and antioxidant protection.

• Phyto Exosomes: Natural delivery vesicles that enhance vitamin C effect and support barrier resilience.

• Acetyl Zingerone: Super-antioxidant that works with vitamin C to neutralise free radicals and shield skin from environmental stressors.

• Multi-weight Hyaluronic Acid and N-acetyl Glucosamine: Support hydration and smoothing.

Good to Know / FAQs

• Vitamin C strength: 20% (Tetrahexyldecyl Ascorbate).

• Can be used with Crystal Retinal (Vitamin A).

• Safe in pregnancy and breastfeeding (subject to medical advice).

• Layer with Liquid Peptides Advanced MP – apply thinner serums first.

• No artificial fragrance (contains natural citrus essence).

• Use in the morning, after cleansing and toning, before moisturiser and SPF.

• If residue remains in bottle, unscrew pump and invert to pour out.

• Do not layer with other high-strength vitamin C serums (e.g. Super C Ferulic).