Product Image
Product Name
C-TETRA® Luxe
Product URL
https://int.medik8.com/products/c-tetra-luxe
Date of Assessment
July 10, 2025
INCI Screenshot
Harmful Flags
Unverified Safety for Sensitive Skin
Useless Flags
No % Disclosed for Key Actives
Bonus Flags
Synergistic Combo Present
Clinically Proven Actives Used
Formula Supports Its Claims
Claims
Hydrates and nourishes skin
Supports collagen synthesis
Provides anti-aging benefits
Suitable for sensitive skin
Contains clinically proven vitamin C derivative (Tetrahexyldecyl Ascorbate)
Nourishes skin with oils and emollients
Score
1
Verdict
🔬 Elite Performer
False/Misleading Claim Details
Suitable for sensitive skin
Key Strengths
Contains a stable, clinically supported vitamin C derivative (Tetrahexyldecyl Ascorbate) known for antioxidant and collagen-boosting effects. Rich in hydrating and nourishing oils such as squalane, jojoba, and various seed oils. Free from synthetic fragrance and drying alcohols. Formulated to provide antioxidant protection and skin hydration with a luxurious texture.
Red Flags
Contains multiple natural fragrance allergens (limonene, citral, geraniol) that may irritate sensitive or reactive skin types. No percentages disclosed for key actives. No publicly available third-party clinical data for product-specific efficacy. Claims of being a “vitamin C alternative” and “suitable for sensitive skin” are somewhat overstated given formulation. No pH disclosure, though less critical for oil-based formulas.
Suitable For
normal, dry, aging
Ingredients
Harmful Score
7.800000000000001
Useless Score
5
Bonus Score
18
Product Type
Serum
Short Description
A luxurious antioxidant serum featuring a stable vitamin C derivative (Tetrahexyldecyl Ascorbate) combined with nourishing oils and botanical extracts to hydrate, brighten, and protect skin from environmental damage.
Notes
Medik8 C-TETRA® Luxe is a rich, oil-based serum formulated with Tetrahexyldecyl Ascorbate, a stable and effective vitamin C derivative known for its antioxidant and collagen-boosting properties. The formula is enriched with a blend of emollient oils including squalane, jojoba, and various seed oils, which deeply nourish and hydrate the skin while enhancing barrier function. Botanical extracts like Panax Ginseng and passion fruit add antioxidant and soothing benefits. While the product delivers antioxidant protection and supports skin brightness, it contains natural fragrance allergens that may not be suitable for sensitive skin. This serum is ideal for those seeking a potent, hydrating vitamin C alternative with a luxurious texture.
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