descriptive
Analysis v1
Strong Support
When you put sunscreen with tiny zinc particles on your skin, they stay on the surface—like little beads stuck in your skin’s wrinkles and hair roots—and don’t go deeper into your skin.
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Evidence from Studies
Supporting (1)
20
Community contributions welcome
20
Imaging of zinc oxide nanoparticle penetration in human skin in vitro and in vivo.
Cross-Sectional Study
Human
2008 Nov-DecScientists put zinc oxide nanoparticles on human skin and used special cameras to see where they went — they stayed on the surface and got stuck in wrinkles and hair follicles, never going deeper into the skin.
Contradicting (0)
0
Community contributions welcome
No contradicting evidence found
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.