A doctor in her 40s uses 3 science-backed products to prevent wrinkles. She combines Korean and Western techniques.

• Dr. Christine Hall uses three skincare ingredients daily to help prevent her skin from aging. • The 44-year-old, who's British-Korean, mixes Korean and Western approaches to skincare. • Hall uses a prescription retinol, but there are lots of over-the-counter versions.

Dr. Christine Hall grew up in the UK but spent most of her summers in South Korea, which gave her an appreciation of both Western and Korean skincare cultures.

The qualified physician and pharmacist-turned "glass skin" specialist told Business Insider that she combines West and Korean skincare products and techniques to keep her skin looking radiant and aging healthily.

"Ideally, I would want that kind of flawless, dewy, glowy skin," she said, but is also realistic, adding: "If you had poreless skin, your skin wouldn