Scheme introduction

Everyone has a large number of sebaceous glands that secrete oil to the surface of the skin, forming a membrane that acts as a part of the skin’s chemical barrier and plays an important physiological role such as moisturizing. However, too much grease, resulting in oily skin, but also annoying. Excessive oil secretion, but also lipophilic bacteria, fungi, parasites to create a good living environment, they multiply, will cause a series of skin problems.