Mung bean

Mung bean, the green bean Korea calls nokdu, as a seed extract or finely ground seed.

What it does: Used in cleansers, masks and toners for a clean, calm feel; a traditional Korean cleansing ingredient.
How often: Daily in most cleansers and skincare, with cleansing oil and the rice arbutin serum in the evening; introduce the retinol shot on two or three evenings a week. Some peeling pads and clay masks are weekly care, while sun protection needs daytime reapplication.