Basic information of hair oil

Hair care essential oil refers to a type of hair cosmetics that is added with "essential oil" and claims to have hair care effects. The essence of hair care essential oils is actually the “oil-based raw materials” of natural plant sources commonly used in cosmetics, rather than real essential oils.

The hair shaft is composed of hairy skin, fur and medulla from the outside to the inside, wherein the structural integrity of the hairy skin determines the apparent characteristics of the hair. A layer of non-polar lipids is attached to the outermost layer of the hair dry skin, the main component of which is C16 ~ C22 alkane, called lipid layer A, which determines the hair shine; the inner layer of the hair skin also contains about 25% The structural lipid and protein skeleton constitute the core layer (δ-lipoprotein layer) of the cell membrane complex (CMC) between the hairy skin cells and the hairy skin and cortex.

CMC forms a mesh-like hydrophobic membrane around the cortex layer. Its function is to protect the fur, adhere to the hair microderma cells and cortical cells, and maintain the integrity and tensile strength of the hair shaft fibers. Therefore, the lipid of the hair fibers indirectly affects its appearance. feature.

Physical and chemical damages such as blow-and-dye and dyeing will change the protein structure and tensile properties of the hair, and make the hair shaft appear dull, dull, rough, and easily broken. Hair care essential oils can directly act on the lipid layer of the hairy skin, because their main component is fatty acid glyceride, which has a polar head, and the main component is non-polar alkane mineral oil, silicone oil, etc. The polar keratin in the fiber has stronger adsorption capacity and better penetration effect. It can even penetrate into the CMC layer of the hairy skin. By strengthening the hydrophobic effect of the lipoprotein layer, the hairy skin is protected from swelling and falling off, thereby maintaining the hair dry. Integrity, to repair damaged hair shaft.

In addition, hair care essential oils usually contain fats and physiologically active ingredients, including sterols, squalene, amino acids, vitamins, and flavanones, dihydroflavonoids, flavonols, catechins, anthocyanins and other flavonoids. These substances are natural antioxidant active ingredients, which can play a physiological role in scavenging free radicals, thereby promoting the improvement of hair strength and toughness, and improving hair loss and hair loss.