face lotion; skin toner
A liquid cosmetic product applied to the face, often for cleansing, toning, or moisturizing. The term is somewhat dated; modern products are more commonly called 化粧水 or ローション.
My grandmother apparently used face lotion regularly when she was young.
Compound of 美顔 (beautiful face) and 水 (water). The exact historical derivation is uncertain, but it likely emerged as a commercial product name in the early 20th century.