Trends and routines

Glass skin

Also written as glass skin routine, dewy skin, mul-gwang.

The Korean finish that made hydration a look rather than a step. It is achieved with layers of thin, watery products rather than one thick cream.

What it needs from a bottle

A layered routine is a multi-bottle routine, and that is a range problem. Four thin products in four unrelated bottles look like four brands. Pick one bottle family in one colourway and change only the size, and the shelf does the selling.

Formats that suit it

• Essence bottles
• Toner bottles
• Ampoules