The Blemish Control Astringent is highly effective, and recommended only for very oily and blemished skin types. Containing Vitamin B complex, it helps to normalize the pH balance of the skin and regulate oil gland secretion. (The Bio-Drying Lotion and the Vitamin B Day Cream are very effective with, and complementary to, the Blemish Control Lotion for blemished skin treatment and maintenance).