Salycilic Acid is BHA (Beta Hydroxy Acid). This is an ingredient for exfoliation by softening and dissolving keratin in the skin and can penetrate into the skin pores, thereby helping to remove clogged pores from excess oil and dirt that causes blackheads. With the presence of Salicylic Acid, it can improve the work of other skin care to work because it is not blocked by dead skin cells.