beauty serum; essence; liquid foundation
A skincare product applied after toner and before moisturizer; often a concentrated treatment. In some contexts, can also refer to liquid foundation.
化粧水の後に美容液をつけます。
I apply beauty serum after toner.
This serum improves skin firmness.
Compound of 美容 (beauty) and 液 (liquid). A modern term for cosmetic serums and essences.