Ingredients

The Medik8 C-Tetra Serum is a daily, morning antioxidant treatment designed to brighten the complexion and protect the skin from environmental damage. It is an oil-soluble, gentle formulation suitable for all skin types, including sensitive skin.When to UseIntegrate the C-Tetra Serum into your morning skincare routine to provide maximum antioxidant protection throughout the day.

Frequency: Use once daily, in the morning.
Step: Apply after cleansing and any water-based serums (like the Hydr8 B5 serum for hydration) but before your moisturizer and sunscreen.
Medik8 CSA Philosophy: It is a core part of the Medik8 philosophy: C (Vitamin C) + Sunscreen by day, A (Vitamin A/retinol) at night.

How to Apply

Cleanse: Start with a clean, dry face, neck, and décolletage.
Dispense: Place 4–6 drops of the serum into your palm or onto your fingertips (check product specific instructions, as different versions may vary slightly).
Massage: Gently massage the serum evenly over the desired areas, avoiding the immediate eye area. (For the eye area, a dedicated product like Medik8 C-Tetra Eyeis recommended).
Absorb: Allow the serum to absorb fully for a few moments.
Follow Up: Apply your usual moisturizer and always finish with a broad-spectrum SPF. Vitamin C enhances the efficacy of sunscreen.

Layering Tips

Layering Order: Apply the C-Tetra serum in order of product texture, generally from thinnest to thickest.
With Peptides: If using a peptide serum (like Liquid Peptides), apply the peptides before the C-Tetra.
With Retinol: Do not use C-Tetra at the same time as vitamin A (retinol) products. Use C-Tetra in the morning and retinol in the evening as per the Medik8 CSA philosophy.
With Hydration: The serum pairs well with hydrating products like Hydr8 B5 for an extra moisture boost.

Shipping & Return

Once we receive your return, we’ll process your refund within 5-7 business days. Refunds will be credited back to your original payment method. For more details on how to start a return, visit our Returns page or contact our support team—we’re here to help! Shop confidently knowing we’ve got you covered.

Medik8 C-Tetra Serum

Brand: Medik8

3,755.00

Shipping calculated at checkout.

Low stock

Target visible signs of ageing with Medik8 C-Tetra Serum; a lightweight, quick-absorbing formula that provides powerful antioxidant protection with minimal irritation and an uplifting natural citrus aroma.

Fortified with stable Vitamin C and Vitamin E, the highly potent treatment penetrates deeply into skin to minimise the appearance of fine lines and wrinkles, whilst shielding skin from the damaging effects of pollution and environmental aggressors. Your complexion is left radiant and youthful with improved suppleness and elasticity. Features a pipette applicator for controlled, mess-free use.

How to use:

After cleansing in the morning, massage 4 drops across the face, neck and décolletage. Leave to absorb before applying moisturiser.

size: 30 ml

30 ml

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Free Returns Within 24h ( with the original case )

Ingredients

Frequency: Use once daily, in the morning.
Step: Apply after cleansing and any water-based serums (like the Hydr8 B5 serum for hydration) but before your moisturizer and sunscreen.
Medik8 CSA Philosophy: It is a core part of the Medik8 philosophy: C (Vitamin C) + Sunscreen by day, A (Vitamin A/retinol) at night.

How to Apply

Cleanse: Start with a clean, dry face, neck, and décolletage.
Dispense: Place 4–6 drops of the serum into your palm or onto your fingertips (check product specific instructions, as different versions may vary slightly).
Massage: Gently massage the serum evenly over the desired areas, avoiding the immediate eye area. (For the eye area, a dedicated product like Medik8 C-Tetra Eyeis recommended).
Absorb: Allow the serum to absorb fully for a few moments.
Follow Up: Apply your usual moisturizer and always finish with a broad-spectrum SPF. Vitamin C enhances the efficacy of sunscreen.

Layering Tips

Layering Order: Apply the C-Tetra serum in order of product texture, generally from thinnest to thickest.
With Peptides: If using a peptide serum (like Liquid Peptides), apply the peptides before the C-Tetra.
With Retinol: Do not use C-Tetra at the same time as vitamin A (retinol) products. Use C-Tetra in the morning and retinol in the evening as per the Medik8 CSA philosophy.
With Hydration: The serum pairs well with hydrating products like Hydr8 B5 for an extra moisture boost.

Shipping & Return

HOW TO USE