The Claim
Molecules with a molecular weight exceeding 500 daltons do not penetrate the stratum corneum of human skin.
What the research says
Not yet evaluated
We are still looking at what the research says.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Molecules heavier than 500 daltons cannot pass through the outermost layer of human skin.
See the scientific wording
Molecules with a molecular weight exceeding 500 daltons do not penetrate the stratum corneum of human skin.
Molecules larger than 500 daltons are too big to squeeze through the tight spaces between the fatty layers in the outer skin layer, so they cannot pass through.
Score breakdown, mechanism chain, raw evidence, ideal studies needed
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.