- 40ml/ 1.35fl.oz. - Condition your skin to look and feel its best with Erno Laszlo 's 'Hydra-Therapy Memory Sleep Mask'. Cleverly designed to work overnight, this intensely hydrating formula is infused with omega-rich winged Kelp extract to boost collagen production and Prickly Pear extract to deliver vital moisture. The weightless, gel-like texture is inspired by the memory foam developed for NASA. - Hydrating overnight mask - Apply to cleansed face and neck, and rinse thoroughly with warm water in the morning - Rich in Omega 3, 6 and 9 fatty acids to increase skin firmness