What is the Hydro-Lipid Layer? 

 

Hydro (water) and lipids (fats) forms an emulsion that coats the hair to keep it hydrated. It is infused into the keratin of the hair’s cuticle which is formed in the follicle.  The outer layer is continuously replenished by secretions from the sebaceous glands. This layer consists of essential fatty acids, ceramides, tryglicerides, cholesterol and water. Essential fatty acids makes up a large percentage of the lipid layer and contribute to hair’s elasticity and aid ceramides in keeping the cuticle scales attached to the hair shaft. 

 

What Happens When the Hydro-Lipid Layer is Destroyed?

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The hydro-lipid layer two main purposes are hydration and protection.This layer protects the outside of the hair shaft and within the cuticle layer by continuously forming a film. It attracts water and slows the evaporation of moisture from the shaft. This layer continuously provides lubrication which prevents cuticles from lifting & snagging on other hair strands. When it’s damaged or completely absent the hair loses the ability to hold moisture. Damage of the cuticle layer leaves hair porous, rough, dull, without elasticity and exposed to breakage.