Does sugar cause wrinkles or damage collagen? Board-certified plastic surgeon Michele Koo, MD, FACS explains glycation, AGEs, acne, and how diet affects skin aging.

A board-certified plastic surgeon explains why THD-Ascorbate, a lipid-soluble form of Vitamin C, reaches the fibroblast and supports collagen where conventional water-soluble Vitamin C cannot.

Dark circles have three different causes—vascular, pigment and structural—and a cream built for one will not touch the other two. Board-certified plastic surgeon Dr. Michele Koo explains how to tel...

Your skin replaces itself every 28 days — but after age 30 that cycle slows to 45–60 days, trapping dead cells that create the dull, rough texture no moisturizer can fix. Board-certified plastic su...

Your skin loses 1% of its collagen every year after age 25 — and most anti-wrinkle serums can't reverse that because they never reach the fibroblasts that build collagen. Board-certified plastic su...

Most dark spot treatments target one enzyme in a four-pathway system — which is why they plateau or fail entirely. Board-certified plastic surgeon Dr. Michele Koo explains the biochemistry behind h...

Sensitive skin isn’t a skin type — it’s barrier dysfunction. When the lipid matrix between skin cells thins, nerve endings that normally sit protected beneath the stratum corneum become exposed to ...

Pores don't open and close — they're structural openings held taut by the collagen scaffolding around each follicle. When that scaffolding degrades after age 25, pores stretch permanently wider. Bo...