UVA rays are the primary cause of UV induced premature skin ageing, and penetrate deep beneath the skin's surface, reaching the dermis. The elastin fibre network, the skin's springs, begins to weaken. Skin becomes less firm and wrinkles appear more pronounced. UVA rays can also travel through glass, so even when you are indoors, your skin is likely to be exposed to the premature ageing effects of UVA rays. SPF 30: broad spectrum filter system to protect against harmful UVB rays, and from UVA rays responsible for premature skin ageing and dark spots. The light non-greasy texture absorbs easily leaving your skin beautifully moisturised and hydrated. Used daily, the broad spectrum UV protection helps guard your skin against then sun's most damaging rays. Reveal firmer, more refined, younger looking skin. Please always read the label before use. For external use only. Keep out of reach of children. Always read instructions.