What is the purpose of sebum?
Sebum is composed of lipids and contributes to the skin barrier function. It protects the skin from damage, especially UV-induced oxidation. At temperatures below 30°C, it thickens and forms a barrier that repels rain for example, whereas heat makes it more fluid, enabling it to mix with perspiration and retain water.
It is therefore very important to the cutaneous ecosystem, provided that its quality is good and that the right quantity is produced.
The causes of hyperseborrhoea
Hyperseborrhoea = excess sebum. Excessive sebum production leads to oily skin; certain factors heavily influence this production.