Medik8 Crystal Retinal 1Medik8 Crystal Retinal 1 is an ideal introduction to retinal, a powerful vitamin A derivative renowned for its anti ageing benefits. This gentle, low strength serum works to reduce the appearance of fine lines, smooth skin texture, and boost radiance. Formulated with stabilised retinaldehyde, its perfect for beginners to vitamin A or those with sensitive skin. Enriched with hyaluronic acid and vitamin E, it hydrates while targeting visible signs of