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

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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Woman in her 50s walking outdoors in golden light, looking healthy and full of energy

Skin Longevity: How to Keep Your Skin Healthy for Decades

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Green leaves and a cut apple next to a petri dish, contrasting plant extracts with laboratory science

Plant Stem Cells in Skincare: Do They Actually Work on Human Skin?

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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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Skincare jar next to a planner, representing consistency over time

How Long Does Skincare Take to Work? A Realistic Timeline

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Unbranded face cream jars lined up on marble with a magnifying glass, representing comparing products

Stem Cell Face Cream: How to Choose One That's Worth the Money

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Abstract illustration of tiny spheres and molecules in soft neutral tones, representing exosomes and growth factors

Exosomes vs. Growth Factors: What's the Difference (and Which One Is in Your Cream)?

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Profile of a woman in her 50s showing her jawline in soft side light

Sagging Skin on the Face: Why It Happens and What Helps It Look Firmer

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Smiling woman in her 50s with natural, radiant skin in soft daylight

Aging Skin: What Changes in Every Decade and What Actually Helps

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