Sebum is an oily substance produced by the sebaceous glands in our skin. It plays a crucial role in keeping our skin moisturized and protected. By forming a thin layer on the skin's surface, sebum helps to prevent water loss and shields against harmful bacteria and environmental factors. While sebum is essential for healthy skin, too much of it can lead to issues like acne and oily skin. Factors such as hormones, diet, and stress can influence sebum production. Maintaining a balanced level of sebum is key to achieving clear and healthy skin.