Skin science, explained by a stem cell doctor

Skincare Guides

Evidence-based guides on stem cell skincare, ingredients and healthy aging from Dr. Joy Kong, MD, a triple board-certified physician with over a decade in regenerative medicine. No hype, no miracle claims: just clear answers to help you make better choices for your skin.

Skincare Guides

Woman applying a gentle retinol alternative cream around her eyes

The Best Retinol Alternatives for Fine Lines (Without the Irritation)

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Peptides in Skincare: What They Do for Your Skin and Which Ones to Look For

Peptides in Skincare: What They Do for Your Skin and Which Ones to Look For

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Close-up of a serum drop with tiny bubbles inside, representing exosomes in skincare

Exosomes in Skincare: What They Are, What They Do and the Hype to Ignore

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Serum dropper resting on fingertips in soft natural light

Growth Factor Serums: What They Do and Who Should Use Them

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Dropper bottles with clear and amber skincare serums arranged on a light background

Skincare Actives Explained: Which Anti-Aging Ingredients Are Actually Worth It?

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