retinoid delivery systems

Nanotechnology sounds like something out of a sci-fi lab, but it's already quietly shaping the skincare products in your bathroom cabinet. From sunscreens to retinoid formulas, dermatologists have used nanosized ingredients for decades to solve real problems: irritation, poor absorption, and inconsistent results. What Counts as "Nano"? A nanoparticle is defined by size, not composition. [...]