👉 Sebum is a type of wax produced by the sebaceous glands in the skin. It helps to keep the skin hydrated and healthy, but it can also cause problems if not properly managed. Sebum is composed of three main components: 1. The hydrophilic (water-loving) component: This is made up of oils and fats that help to moisturize the skin. 2. The hydrophobic (water-repelling) component: This is made up of glycerin,