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Everyone wants to have his head is glossy black hair, it is not only a symbol for a healthy, thick hair, a suitable hairstyle can make you even more grace, to give people the feeling of the love. Find Most Gorgeous hair straighteners for Yourself! Therefore, people choose various types of shampoo or hair tonic to take care of their hair. GHD hair straighteners Most Charming Gifts in the Season of Summer However, many people neglet the sunlight, especially the ultraviolet light's demage to hair.Stars even Bought ed hardy shoes for Mother!

Hair's longtime exposure to the sunlight, regardless of hair permed, dyed or natural, will fade, dehydrate, be dry and break. The obvious example is the "beach people" features after staying at the beach for many hours, a red-brown skin and "bleached yellowish" hair. Hair constitutes keratin composed of 13 kinds of amino acid, among which the amount of cystinol is much more than that of other amino acid, and particular stereostructure make the hair elastic.

One function of hair is to prevent radiation on scalp from sunlight. Because the cuticle of hair can reflect some sunshine and absorb some sunshine, it absorbs the ultraviolet radiation with the help of cystine. As a long time for hair exposed to sunlight, cystine disulfide bond itself will be broken, decomposition, it will reduce and lose the ability to absorb ultraviolet radiation. The dyed hair is easier to be damaged by sunlight and fade than natural hair.

This because the hair has already demaged by "chemistry",plus the dyestuff -- especially the organic dyestuff, which itself is unstable to light, easily fading and decomposing. The common curl agent to perm mainly contains reductive ethanol sulfide salts or "cold wave lotion " from cysteinyl acid derivatives.

These substances make the hair's disulfide bonds broken, cystine is reduced to the cysteine thiol-containing,the hair become soft and bended deformed and fixed after the curlers welding, and then oxidized by the oxidizer stereotypes. During the oxidization, the sulfydryl in the staggered halfcystine rearranges to cystinol, therefore, the flexibility of the hair recovers. These have been chemical damage hair, deepening injury sunshine to make the hair porous, water loss wither and decline in tensile strength.

Sun damage to the hair more and more attracts people's attention! In order to protect the hair, first it is to take physical methods, when work in the open air or field or travel, you can wear a hat and hold an umbrella; Secondly, chemical care. Use ultraviolet light absorbents assisting with cyseine in the hair to absorb ultraviolet light. These substances have a strong abbility to absorb ultraviolet light, the wavelength of which is among 200 to 360nm.

No stimulation to skin, low toxicity. The familar absorbents are paraaminobenzoic acid esters, salicylic acid esters. These "sun block" substances have already added into products like shampoo, hair conditioner, hair spray and so on. Researches show that these ultraviolet light absorbers reduce the cracks of disulfide bonds, cystine damage and fading.