20% off

Medik8 C-Tetra Advanced 30ml

$114.40 AUD $143.00
By Medik8

Pickup available at 121 Alexander Street

Usually ready in 2 hours
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Medik8 C-Tetra Advanced is a high-performance Vitamin C gel-serum formulated with 20% stabilised Tetrahexyldecyl Ascorbate to help visibly brighten uneven skin tone, smooth the appearance of fine lines and provide advanced daily antioxidant protection. Despite its high Vitamin C concentration, the lightweight formula has been developed to deliver potent brightening benefits while remaining gentle and comfortable across all skin types.

The next-generation formula combines Vitamin C with green tea-derived Phyto Exosomes and antioxidant Acetyl Zingerone to help defend the skin against environmental oxidative stress and support a more resilient-looking complexion. Hyaluronic Acid provides immediate hydration and plumping, while N-Acetyl Glucosamine helps refine visible pores, support the skin barrier and promote smoother, more even-looking skin.

With a fast-absorbing, non-greasy gel-serum texture, C-Tetra Advanced is ideal for clients wanting a more intensive Vitamin C treatment for dullness, uneven tone, visible ageing and environmental skin stress. Medik8 positions it as the 20% strength option within its C-Tetra Vitamin C range.

Best For

Dull or tired-looking skin
Uneven skin tone
Visible pigmentation and discolouration
Fine lines and wrinkles
Uneven skin texture
Visible pores
Premature visible signs of ageing
Skin exposed to environmental stressors
Normal, combination and oily skin
Clients wanting to progress to a higher-strength Vitamin C serum

Medik8 states that C-Tetra Advanced is suitable for all skin types and has been formulated using a gentle, stabilised form of Vitamin C despite its 20% concentration.
Product Benefits

Helps visibly brighten dull and uneven-looking skin
Promotes a more luminous and even-looking complexion
Helps soften the appearance of fine lines and wrinkles
Provides advanced antioxidant protection against environmental stressors
Supports healthier-looking skin resilience and barrier function
Helps visibly smooth and refine uneven skin texture
Provides hydration and an immediate plumping effect
Helps refine the visible appearance of pores
Lightweight, fast-absorbing gel-serum texture
Non-comedogenic and suitable for all skin types
How to Use

Use in the morning after cleansing and toning.

Apply 2–3 pumps across the face, neck and décolletage and gently massage until absorbed. Follow with moisturiser and always finish with a broad-spectrum sunscreen.

If layering multiple serums, apply from thinnest to thickest consistency. Medik8 recommends applying C-Tetra Advanced after water- or oil-based serums and before moisturiser.

Patch test at least 24 hours before first use.
Ingredients

20% Stabilised Vitamin C – Tetrahexyldecyl Ascorbate
A potent, lipid-soluble form of Vitamin C that helps visibly brighten uneven skin tone while providing antioxidant protection against environmental oxidative stress.

Phyto Exosomes
Green tea-derived phyto exosomes contain naturally occurring proteins, lipids and signalling molecules that help support skin resilience and barrier function.

Acetyl Zingerone
A high-performance antioxidant that works alongside Vitamin C to help neutralise free radicals and protect against environmental stressors.

Hyaluronic Acid
Helps attract moisture to the skin for an immediately hydrated, plumper and more supple-looking complexion.

N-Acetyl Glucosamine (NAG)
A barrier-supporting skin-refining ingredient that helps smooth the appearance of pores while supporting the skin's natural Hyaluronic Acid levels.

Please refer to product packaging for the most current full INCI ingredient list.
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