The cuticle is the outermost part of the skin and is made up of its own dead cells. Regular exfoliation is needed when the stratum corneum builds up too thick and clogs the pores leading to symptoms such as skin acne and inflammation. Exfoliation buildup on the outer layer of the skin can clog pores, which not only leads to acne, but also interferes with the absorption of skincare products. Exfoliation usually refers to the removal of the discarded stratum corneum of the face. Exfoliation can be done by using a face scrub or using a cleanser with a strong cleansing power, etc. However, it is important not to over-clean, usually once a week is sufficient, as over-washing the face can damage the stratum corneum and tend to make the skin sensitive. Can also be removed by using the method of brushing acid, facial brushing acid need to use a high concentration of salicylic acid or fruit acid applied to the skin, to remove the waste of the facial stratum corneum at the same time, but also can play a deep clean pores and remove the role of acne and acne marks. Avoid prolonged exposure to ultraviolet rays, which can cause darkening or hyperpigmentation of the skin area. If necessary, consult a medical professional.