Collagen Boosting Overnight Mask from Revolution. Plump, hydrate and intensely replenish your skin with this luxurious pamper treat that transforms your skin overnight. Powered by Tremella Mushroom to instantly plump and hydrate the skin, Olive Stem Cells to help stimulate natural collagen production for a long-term firming and smoothing effect and Vegan Collagen which is carefully designed to mimic collagen to deeply moisturise and keep skin looking youthful. Suitable for all skin types. Cruelty-free and vegan.