Ascorbic Acid (Vitamin C)
Ascorbic Acid, also known as Vitamin C, is a powerful antioxidant widely used in UK skincare to brighten skin and protect against environmental damage. It is a water-soluble form of vitamin C that helps fade dark spots and boost radiance, making it a favourite in serums and creams for dull or tired-looking skin.
How it works in skincare
In cosmetics and skincare, ascorbic acid functions as a potent antioxidant that neutralises free radicals generated by UV exposure and pollution. It inhibits melanin production to help reduce the appearance of hyperpigmentation and dark spots while stimulating collagen synthesis to support firmer-looking skin. Its ability to brighten and even skin tone makes it a staple in brightening serums, moisturisers and eye treatments, though it performs best in formulations with a low pH and is often paired with stabilising ingredients to prevent oxidation.
Key benefits
- Brightens dull skin for a more radiant complexion
- Helps reduce the appearance of dark spots and hyperpigmentation
- Supports collagen production for firmer-looking skin
- Provides antioxidant protection against environmental stressors
- Helps even skin tone and improve overall clarity
- Enhances the effectiveness of sunscreen when used alongside
Best for
dull skin, mature skin, uneven skin tone, pigmentation concerns, normal skin, oily skin
Where it comes from
Ascorbic acid is naturally found in a wide variety of fruits and vegetables, most abundantly in citrus fruits such as oranges and lemons, as well as in rose hips, acerola cherries and blackcurrants.