pyruvic 40%, lactic 5%, Alcohol Denat, Propylene Glycol, Triethanolamime. glycerin, Aqua/Water. Pyrella peel is a medium-depth peel. It is keratolytic and penetrates rapidly and deeply into the skin, rendering very effective results. It also contains lactic acid which is known to strengthen skin's barrier function, preventing water loss and promoting skin hydration. It allows an exfoliation without high levels of dryness. It is known lactic acid increases the production of dermal components, especially hyaluronic acid, improving skin texture, smoothness etc. Preventing from the thickening of the upper layers of the epidermis. It is known that pyruvic acid has the ability to stimulate new collagen production and helps the formation of elastin fibers and glycoproteins.