Noun

A cross between a moisturizer and serum, applied before moisturizer. Like a serum, they're usually pretty concentrated so are ideal for targeted concerns. Consistency can depend, but typically have a cream or a gel texture.

Noun

Simply put, a facial mask. Can be in the form of a sheet mask, but usually is a gel or cream mask. Overnight mask packs are very common.

Noun

Usually a concentrated serum or liquid used to target specific skincare concerns. Often are more concentrated than a serum and are typically applied with a modality that increases absorption, like MTS, Iontophoresis, etc.