#mechanism

All articles tagged "mechanism".

2 articles

September 9, 2025·4 min read

The Molecular Mechanism of Retinol Collagen Stimulation

Retinol undergoes two-step oxidation in skin cells: retinol → retinaldehyde → all-trans retinoic acid (the active form). Retinoic acid enters the cell nucl...

Science

August 30, 2025·3 min read

How Does Sunscreen Actually Work? The Science Explained

Chemical (organic) sunscreens contain molecules that absorb UV photons, converting the energy to heat that dissipates harmlessly. Different molecules absor...