Oily hair: Take a hair, first take 10 cm, and then lengthen the hair. If the hair grows to 25%~30%, it can naturally retract after loosening, indicating oily hair.
Dry hair: If the length is less than 25% and cannot be retracted, the hair is dry.
2. Features
Oily hair: it is often greasy and needs to be cleaned frequently, which is easy to produce dandruff and the scalp is nutritious.
Dry hair: dry, easy to entangle, dull, easy to knot, usually difficult to take care of.
Extended data:
Diet improves different hair problems:
1. Diet to prevent hair from turning yellow and black: Scientists believe that hair turning yellow and black is related to eating more sweets and meat to produce too many acidic substances in the blood, while vegetables and fruits contain more minerals, which can combine with acids to form salts and maintain the normal pH value of the blood.
2, to prevent dry hair, dim, fragile diet: 30-40 hairs fall off every morning and evening is a normal physiological phenomenon. Laboratory analysis shows that the decrease of methionine and cystine and the increase of sulfoalanine in hair are the reasons why hair becomes brittle, dry and easy to break. Soybeans and bean products, eggs, lean meat, mussels, sesame seeds and walnuts are rich in methionine and cystine, so you should eat more.
Baidu encyclopedia-hair care
Baidu encyclopedia-oily hair
People's Network-Want black hair? Diet helps you improve your hair problems.
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