Detailed answer

Sebum is an oily substance produced by the sebaceous glands in the skin. It helps to moisturize and protect the skin. However, when there is an excessive production of sebum or if the sebum becomes trapped in the pores, it can lead to uneven texture. Excess sebum can mix with dead skin cells and bacteria, clogging the pores and causing them to enlarge. This can result in a rough and bumpy texture on the skin. Ultimately, controlling sebum production and keeping the pores clear are essential in maintaining a smooth and even skin texture.