J

jaborandi

A tincture extracted from the leaves of this South American tree (genus Pilocarpus) stimulates the sebaceous gland of the scalp. It can also be used to stimulate sweating, and was once used in hair tonics and skin hydrating products. Although poisonous if taken internally, it has no known toxicity on the skin.

Japan wax

See waxes.

jasmine absolute

This absolute is often called the "natural perfume," because it’s usually obtained without volatile solvents or heat. Some people are allergic to jasmine.

jojoba butter and oil

Obtained from the jojoba shrub (Simondsia chinensis), sis), which grows in the southwestern United States, this butter can be used in cosmetics as an emollient and in sun care products (it protects against UV rays).

Mexican and American Indians have been using jojoba oil, a liquid wax pressed from the jojoba bean, for hair and skin care for many years.

jojoba wax

See waxes.

waxes.

juglone

This is the active coloring principle in walnuts and is used in hair dyes. It’s not known to be toxic to the skin, but it’s a poison if taken internally.