Four Real Deep Masks, one of each, so you can find out which one your skin actually wants before committing to a full box. Every mask is a 34 g ampoule solidified into hydrogel that turns transparent as the essence absorbs. What is in the set Bio-Collagen: ultra-low molecular weight collagen and oligo-hyaluronic acid for firmness, plumpness and smaller-looking pores. Hydro Cera-nol: five-layer ceramides, D-panthenol and glacial water for skin that is dry, tight or reacting. Radiant Vita Niacinamide: niacinamide, glutathione and pineapple water for dark spots and dullness. Refreshing Sea Kelp: fermented kelp and deep sea water for oily, congested and acne-prone skin. How to wear them Cleanse and tone. Apply to dry skin for the best grip. Peel off the film and place the upper and lower sheets on the face, smoothing them from the center outwards. Leave on for 3 to 4 hours, or overnight, until the mask turns transparent. Remove and pat the remaining essence into the skin. No rinsing needed. After the Radiant Vita mask, use SPF 30 or higher the next morning. Brightening actives make skin more sensitive to sunlight. All four are free from artificial fragrance, artificial dye, PEG and 19 controversial ingredients. Hypoallergenic and suitable for all skin types, including sensitive skin.