SKIN CLEANSING
In order for the skin to protect itself from environmental damage, it creates a moisture barrier of an oily substance called sebum. While sebum is beneficial to the skin, it may cause discolouration of the skin, irritation, blockage of skin follicles which leads to acne and a generally unhealthy-looking skin.
That's where cleansing comes in. Here is what TO DO and what to NOT DO.