VC 15 Serum is a topical serum containing vitamin C at a concentration of 15%. It is designed to improve the appearance of photo-damaged and ageing skin, hyperpigmentation, acne, and acne scars. The serum contains two key ingredients: L-ascorbic acid and ascorbyl glucoside, both of which are stable forms of vitamin C. When applied to the skin, vitamin C helps to promote collagen production and provides antioxidant protection against environmental stressors.