Sea grape

Sea grape, the seaweed Caulerpa lentillifera, as an extract; Korean labels list it as 바다포도추출물.

What it does: Used in cleansers, toners, ampoules, creams and eye patches, most often in formulas made for pore care, as a seaweed extract that brands credit with firmer-looking pores.
How often: Follows the product it is in: morning and evening in cleansers, toners, ampoules and creams, in the evening in a cleansing oil, and as needed in eye patches and a sebum softener.