FDA said hair dye is safe since no clear research showing dangers to the liver or kidneys
Pharmacist Weerachai Nalawachai, Deputy Secretary General of the Food and Drug Administration, said the FDA has already coordinated with the doctor who gave the information. Note that the said information is a report in a foreign country.
Some patients were found to have liver and kidney abnormalities related to exposure
to hair dye but the number of cases is not many.
Currently, there is no clear research showing that chemicals used as ingredients in hair dyes are harmful to the liver or kidneys. But exposure to chemicals too often or for too long can increase health risks both scalp irritation and allergies which is a personal matter.
The Food and Drug Administration (FDA) regularly inspects hair dyes. It was found that the hair dye had a notification number, use type and consumers should choose to buy cosmetics that have labels in Thai indicating the name and type of cosmetics. Shows the names of all substances used as ingredients. Name and location of the manufacturer or importer, net quantity, time of production, month and year of production as well as month and year of expiration (For cosmetics that have been used for less than 30 months).
Warning: It is important to have the notification receipt number. Consumers should buy from a trustworthy store with a certain provenance or online stores that have e-commerce registration with the Department of Business Development. Because if you use it and there is a problem, you will be able to trace it back to check.
Deputy Secretary General added that hair dyes can cause allergic reactions or irritation. Consumers and hairdressers should use it with caution. Follow instructions and warnings strictly and should test for allergies before use every time even it's the same brand or color that you usually use. Apply it on the under arm or behind the ear and leave it for
24-48 hours If abnormalities such as rashes, itching, or irritation occur, do not use the product. Do not dye your hair too often, you should leave a distance when dyeing your hair.
Source : Thairat Online