What it does
A nucleoside that signals skin cells to repair and regenerate. Smooths the look of fine lines and supports overall skin tone.
Best for
Fine lines, dull skin, and as a gentle wrinkle-targeting active for sensitive or retinol-intolerant skin.
The full picture
Adenosine is a naturally-occurring nucleoside (a building block of DNA/RNA and the ATP energy molecule) that, when applied topically, signals skin cells to produce more collagen and accelerate repair. Korean cosmetic regulators recognize it as a functional anti-wrinkle ingredient, which is why it appears in many K-beauty firming products including Sulwhasoo Essential Firming Cream EX and numbuzin's No.9 line. It tends to be gentler than retinol with a slower onset of visible results.
Evidence
Topical adenosine produces statistically significant improvements in fine wrinkles and skin smoothness.
Read the source: PubMed: topical adenosine for facial wrinkles ->