This advanced anti-ageing night serum minimises the appearance of fine lines and wrinkles, and firms, plumps and resurfaces skin. Formulated with stabilised retinol – a powerful derivative of vitamin A – it works up to 11 times faster than classic forms of retinol. Intensely hydrating, it boosts collagen, and also reduces blemish-causing bacteria to keep skin clear, balanced and radiant. Suitable for those ready to step up from Crystal Retinal 3.