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The Ritual SCIENTIFIC APPROACH EFFECTIVENESS SENSORIAL

SCIENTIFIC APPROACH

A global approach

The HAIR RITUEL by Sisley-Paris hair care routine acts to condition both the scalp and the hair fiber for global action.

THE SCALP
Just like the skin, the scalp is supported by a multitude of small blood vessels providing all the necessary nutrients for hair health, protection and shine.
THE ROOT

The root of a hair, also called the hair bulb, is where the hair is produced. This is where the cells responsible for the formation of the hair fiber and its color are concentrated.

The sebaceous gland in contact with the hair follicle provides the sebum necessary for the protection, shine and suppleness of hair.

THE HAIR FIBER
The hair fiber is subject to all kinds of environmental and behavioral damage (pollution, wind, sun, smoke,stress, etc) which weakens it day after day.
STRUCTURE

The hair fiber consists of three layers.

The medulla at the center of the hair fiber.

The cortex constitutes the actual structure of the hair fiber. Its cells contain melanin, which gives hair its color, and keratin, responsible for hair's resistance and elasticity.

The cuticle, the outermost layer, protects the cortex from damage and ensures shine.

COMPOSITION

The hair fiber is primarily composed of keratin (approximately 88%), which provides it with resistance and elasticity.

The lipids present mainly in the intercellular cement of the cortex and the cuticle provide hair with a certain degree of impermeability and ensure cell cohesion within the hair fiber.

Melanin is responsible for the color of hair.