Tetrahexyldecyl Ascorbate
Tetrahexyldecyl Ascorbate is a stable, oil-soluble form of vitamin C used in premium UK skincare. Unlike pure ascorbic acid, it is gentle, non-irritating and mixes easily with oils and creams, making it a favourite in serums and moisturisers.
How it works in skincare
In cosmetics and skincare, tetrahexyldecyl ascorbate functions as a potent antioxidant and brightening agent. It penetrates the skin more effectively than water-soluble vitamin C, helping to reduce the appearance of dullness and uneven tone while supporting collagen production for a smoother, more radiant complexion. Its lipid-soluble nature also allows it to work well in both water-in-oil and oil-based formulas, delivering vitamin C benefits without the instability or irritation often associated with L-ascorbic acid.
Key benefits
- Brightens and evens skin tone
- Helps reduce the appearance of dark spots
- Powerful antioxidant protection against environmental damage
- Supports a firmer, smoother-looking complexion
- Gentle enough for sensitive skin
- Stable in both oil and cream formulations
Best for
mature skin, dull skin, sensitive skin, dry skin, uneven skin tone
Where it comes from
Tetrahexyldecyl ascorbate is a synthetic derivative of ascorbic acid (vitamin C) produced by combining it with the fatty alcohol tetrahexyldecanol. While the vitamin C component can be sourced from plant origins such as citrus fruits or rose hips, the final ingredient is created in a laboratory to improve stability and oil solubility.