A tree commonly found throughout India and Pakistan. It produces the fruits and seeds used to create neem oil, a substance prized for its purported skin-friendly benefits. Neem is said to treat a variety of skin conditions, but there is currently limited scientific evidence for these claims.

Neem leaf and oil are generally safe for short-term use. However, pregnant women should not use products with this ingredient, as neem can cause a miscarriage. People with diabetes and auto-immune disorders should also check with their physicians before using products with neem.