Macrobiotics: The study of prolonging life with diet or other ingested substances.

Malic Acid: A glycolic acid derived from apples.

Mallow: An anti-inflammatory substance that helps prevent age lines and reduce eye swelling.

Matt: A non-shiny surface that absorbs light.

Melanin: The black pigment found in hair or skin.

Melanoma: A type of skin cancer characterized by a black or dark brown pigmented tumor.

Moisturizer: An emollient cream used to hydrate skin.