Salicylic acid, a beta hydroxy acid, is an effective ingredient for treatment of acne-prone skin. It is a particularly effective ingredient that fights the causes of blemish-prone skin: blocked pores and bacterial growth. It is an antibacterial ingredient with an exfoliating and comedolytic effect: it  counteracts Cutibacterium acnes, a bacteria that can trigger acne outbreaks, it dissolves & removes dead skin and opens up clogged pores and softens the skin to even prevent blocked pores. This small lipophilic acid penetrates into pores for deep pore cleansing. Overall, it improves the appearance of the skin: it reduces blemishes and prevents them from re-appearing.

AHA, stands for alpha-hydroxy acid. At Eucerin, we use the AHA Glycolic acid, an acid originally derived from sugar cane. This peeling acid has a very small molecular size, makes skin smoother, more even and opens pores, without compromising on barrier structures of the skin. It promotes exfoliation by reducing cell adhesion in the epidermis and increasing cell turnover. Furthermore, it increases the biosynthetic capacity of collagen and builds support structure in the dermal matrix to reduce wrinkles and fine lines.

BHA stands for Beta hydroxy acid. At Eucerin, we use the BHA Salicylic acid. This small lipophilic acid penetrates into pores for deep pore cleansing, dissolves dead skin cells and controls sebum production.

PHA stands for Poly hydroxy acid. At Eucerin, we use the PHA Gluconolactone. With its hydroxy groups and larger molecular size, this exfoliating acid penetrates more slowly to the skin. Therefore, it is especially suitable for sensitive skin. It moisturises and makes skin more even and smoother.