C-Tetra Advanced
A stable vitamin C serum for daily antioxidant protection.
£47.60
£56
Save 15%Vitamin C has two jobs: antioxidant defence against daily UV and pollution exposure, and interrupting the pathway that produces excess pigment. C-Tetra Advanced uses a stable, oil-soluble form that tends to suit skin already using other actives better than a high-percentage L-ascorbic acid serum, which can sting on compromised or retinoid-adjusted skin.
Who it is for
Anyone wanting daily antioxidant protection. Particularly suited to skin already using a retinoid, where a gentler vitamin C format is less likely to cause irritation.
How to use
Apply in the morning to clean skin, before moisturiser and sunscreen.
What to expect
Brightness within four to six weeks of consistent use. Pigmentation benefits are slower and depend on daily sun protection alongside it.
Skin type suitability
Key actives
Size or volume
30ml
Time of day
AM
Evidence level
Well establishedTopical vitamin C has consistent human trial evidence as an antioxidant and for improving the appearance of uneven tone. Stable, oil-soluble formulations are generally better tolerated than high-percentage L-ascorbic acid.
What this means →Part of our Daily Essentials range
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C-Tetra Advanced
£48