According to the Food and Drug Administration, white hair is caused by factors such as age, which cause melanocytes to stop secreting melanin.

(Picture taken from Photo AC)

[Health Channel/Comprehensive Report] With age, it is easy for the hair to gradually turn gray. Some of them want to use cosmetics to reverse the gray hair to black hair. The Food and Drug Administration stated that when the hair turns gray, it cannot be reversed, so Don't expect hair care cosmetics to make your hair black. At present, if you want to turn white hair into black hair, the only way to see the effect is to dye your hair.

The Food and Drug Administration posted on the Facebook fan page "TFDA Safe Use of Cosmetics" to explain that the hair looks black, mainly because the "melanocytes" produce melanin; the reason for the white hair to grow is because of age and other factors, so that the melanocytes stop secrete melanin.

Please read on...

The Food and Drug Administration pointed out that when the melanocytes of the hair follicles age and die, according to current scientific data, they cannot be revived and become younger, so the graying of hair cannot be reversed, so don't believe in "reverse gray hair" and "rejuvenation of black hair". , "Reverse white hair to black hair" and other claims.

5 steps to dye your hair healthy without hurting your hair

The Ministry of Health and Welfare has stated that the scalp is the part with the most hair follicles and the most dense, hair dye ingredients may enter the human body through the hair follicles, and improper use of hair dye may cause symptoms such as erythema, itching, blisters, and skin ulcers.

Therefore, the Food and Drug Administration provides 5 steps for hair dyeing, so that people can dye their hair safely and not hurt their hair:

1. Before dyeing hair, you must

first choose before dyeing

: When purchasing hair dyes, you must purchase hair dyeing products with a license number and a complete label, especially if the product packaging has a drug-containing cosmetic license number approved by the Ministry of Health and Welfare, such as Ministry of Health (Department) Makeup System No. 000000, Ministry of Health (Department) Makeup Input No. 000000, and Ministry of Health (Department) Makeup Lushu No. 000000 No.

2. Make sure

the hair is healthy

before use : Pay attention to whether the skin and scalp around the hair are healthy, and do not dye your hair when there is a wound.

3.

To be clear

: Only after reading the instructions and precautions on the label of the hair dye product can it be safely dyed.

4. Use the hair dye correctly and safely by

smearing

: avoid contact with the scalp, and do not use shampooing and rubbing to dye your hair.

5.

All attention

: Pay attention to the condition of the skin after dyeing, and it is recommended that each hair dyeing interval be more than 3 months.

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keywords

  • hair

  • cosmetic

  • gray hair

  • hair follicle

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