Serum

What is Serum?

A concentrated, fast-absorbing treatment step positioned between essence and cream. In practice serum, ampoule and essence overlap heavily across brands; the differentiators a buyer should compare are active concentration, viscosity and price per millilitre, not the name on the box.

At a glance

Category

Formulation

Also known as

세럼

Korean term

세럼

Last reviewed

July 23, 2026

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