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Ingredient Intelligence · Skin

The 3:1:1 Lipid Ratio in the Skin Barrier: Is Ceramide Alone Enough?

What does a 3:1:1 ratio of ceramides, cholesterol and fatty acids mean? The evidence, its limits and what to know when choosing a product.

Trend status: Now Evidence grade B: Moderate Evidence grade C: Emerging

· 4 min read

Hype vs Evidence · Ingredients

PDRN Is Everywhere. But Does the Science Match the Hype?

Salmon-DNA serums and injections are the skincare story of the moment. The best evidence is real, but it mostly concerns injected products and wound healing, not the serum on your shelf.

Trend status: Rising Evidence grade C: Emerging Evidence grade D: Weak

· 5 min read

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