Onion

Onion, as an extract of the bulb.

What it does: Used in toners, pads, creams, cleansers and spot patches for the look of blemish marks and uneven texture; onion extract has long featured in gels for old marks.
How often: Morning and evening in most facial skincare, with spot patches when needed; the rubber masks are used one to three times a week. Sunscreen needs daytime reapplication, and scalp care is used daily or with each wash.