To stay looking beautiful and ensure its strength, hair needs lipids. Some are a constituent part of the hair shaft, others are supplied to it by the sebaceous glands.
To stay looking beautiful and ensure its strength, hair needs lipids. Some are a constituent part of the hair shaft, others are supplied to it by the sebaceous glands.
The lipid components of hair represent 3% of its composition. Produced in the hair bulb they are formed from sterols , fatty acids and ceramides. They are present essentially in the intercellular cement of the cortex and the cuticle and provide the hair with a certain impermeability and ensure the cohesion of the capillary fibre. In-depth study of the latter point has allowed L'Oréal Laboratories to create Ceramide R which behaves in an identical way to natural ceramides, allowing damaged hair to be repaired.
The sebaceous glands, next to the hair follicle, supply the sebum. This mixture of triglycerides, waxes and squalene form a film on the surface of the skin and lubricate the hair, thus preserving its suppleness and sheen. Being hormone dependent, the sebum can be produced in excessive quantities, making the hair greasy and heavy. On the other hand, if too little is secreted, the hair becomes damaged, dry and dull.