MAKEUP PRODUCTS (NON-PERMANENT)

While many chemicals in beauty products present hardly any or zero threat, dozens have been associated to substantial medical issues, such as cancer, and neurological harm. Chemicals in cosmetics can enter a person's body through the skin and inhalation, and pose the same problems as food chemicals, per this site.

Contaminants and chemicals linked to cancer are found in food and several other common goods. But, no classification of consumer goods is susceptible to less government inspection than cosmetics and other personal products, including Brow/ Hair Tint. Though most of the chemicals in cosmetics very likely present minimal risk, subjection to a few is linked to critical health disorders, including cancer.