The rubber mask works much like the at-home versions we've seen before, but Dr. Jart+ has made the treatments more user-friendly and less messy, thanks to the cup containers. Unlike other rubber masks, which require you to stir your concoction like a chemist (inevitably splashing formula on yourself in the process), to activate Dr. Jart+'s new masks, you place a finger over the cup's straw hole and shake — like you're mixing a cocktail. The formula quickly congeals into the rubbery texture you apply to your face. The innovative rubbery modeling mask penetrates skin texture more deeply than a sheet mask to deliver high-potency active ingredients. Each freshly-made mask penetrates skin surface to quickly and effectively deliver the benefits your skin needs most. Choose between hydrating, firming, brightening, or soothing options. HOW TO USE: 1.Remove the lid and spatula from the shaking cup.2.Pour the Double Trans Booster (1) and Ampoule (2) into the shaking the cup and cover with the lid. Block the hole on the lid with your finger and shake the cup until all the contents are mixed evenly.3.As soon as the mixture turns into cream, use the provided spatula to spread the mask evenly all over your face, avoiding the eye and lip areas.4.After 15-20 minutes or when the mask hardens, gently peel off the sheet starting from the edges.5.Wipe off any residue and continue with your skin care routine. !Precaution: Product must be applied within 2-3 minutes after mixing. INGREDIENTS: STEP 01 Super Booster:Cetyl Ethylhexanoate, PEG-8 Glyceryl Isostearate, Phenoxyethanol, Ethylhexylglycerin, Citrus Aurantium Bergamia (Bergamot) Fruit Oil, Trihydroxystearin, Silica Dimethyl Silylate, Algin, Tetrapotassium Pyrophosphate, Calcium Sulfate.STEP 02 Soothing Liquid Ampoule:Water, Dipropylene Glycol, Aloe Barbadensis Leaf Extract, Psidium Guajava Leaf Extract, Guaiazulene, Menadione, PEG-60 Hydrogenated Castor Oil, Butylene Glycol, Citrus Aurantium Bergamia (Bergamot) Fruit Oil, Gardenia Florida Fruit Extract, Coptis Japonica Extract, 1,2-Hexanediol, Glycerin, Caprylic/Capric Triglyceride, Hydrogenated Lecithin, Polyglyceryl-10, Diisostearate, Phenoxyethanol, Ethylhexylglycerin.