Efficacy and mechanism of retinyl…ced skin photoaging.

This lab study found that retinyl palmitate (a vitamin A derivative) protected skin cells from UV damage by reducing collagen breakdown, decreasing inflammation markers like IL-6 and TNF-α, and helping cells repair themselves. The research suggests it works through multiple pathways—basically telling your skin cells to make more collagen, calm down inflammation, and stay alive longer when exposed to UVB rays.