1, sodium dodecyl sulfate component hazards: inhibit hair growth, lead to hair loss, carcinogen.
As a foam component in shampoo, many shampoo manufacturers choose sodium dodecyl sulfate, which has strong cleaning ability. There is evidence that if it is used for a long time, it will lead to cancer and genetic variation.
At the same time, it will destroy the essential oil and protein of hair growth, inhibit the healthy growth of hair and lead to hair loss. In its manufacturing process, a carcinogen named "1 4 dioxane" will be produced as a by-product through "ethoxylation".
2. Harm of diethanolamine (DEA) and triethanolamine (TEA): dry, fragile and lifeless hair.
Products containing diethanolamine or triethanolamine can cause scalp inflammation and even allergic reactions, and they can also affect healthy components (such as keratin) in hair, resulting in dry, fragile and lifeless hair.
3, the harm of parabens: stimulate the skin, affect the hormonal balance, leading to hair loss.
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P-hydroxybenzoate is a well-known toxic chemical, which is used to extend the shelf life of shampoo and other products. They not only irritate the skin and destroy the scalp health, but also affect the hormone balance, leading to hair loss.
4, formaldehyde hazard: hair loss, potential carcinogen.
Some shampoos contain formaldehyde. Excessive exposure to formaldehyde may lead to hair loss, which is also a potential carcinogen.
5, alcohol hazard: dry hair.
Almost all hair styling products contain some form of alcohol, and if the concentration is too high, it will lead to dry hair. If there is alcohol in the four ingredients list of shampoo or styling products, you should be especially careful, indicating that its alcohol content is too high.
6, other harmful chemicals
For example, artificial spices and pigments are more easily absorbed by the human body, and can also destroy the outer skin itself, resulting in dry and rough skin, more dandruff, reduced scalp elasticity and poor defense function. Generally speaking, the stronger the function of shampoo, the greater the side effects.
People's Network-Shampoo also depends on the ingredients. Be careful that washing your hair will damage your memory.