Hair chalking may be the newest teen trend in temporary hair color, but the FDA warns it could have damaging adverse effects.
"Hair chalking is the recent craze among our teenagers, which involves rubbing a piece of colored pastel chalk onto certain strands of hair to change their hair color. For dark-haired persons, hair strands to be colored must be moistened first with water then twisted on sticks as the chalk is being applied and lock in the color by running through a hair straightener iron," FDA director general Kenneth Hartigan-Go said in a statement.
The problem with hair chalking is that many of the products are sold online and are not regulated by the Food and Drug Administration.
"The products may contain ingredients such as dyes or colorants, chemicals and preservatives, which are not allowed and may cause allergies and adverse reaction on the scalp, head, eyes, and skin," the statement read.
Some also worry that hair chalking could harm people with asthma if they accidentally inhale some of the ingredients.
The FDA urges teens to avoid any products that have not been approved by the agency.
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