Is CETAC wrongly restricted to 0.25% just because injected CETAB is toxic?

@Perry posted an interesting paper here
https://chemistscorner.com/cosmeticsciencetalk/discussion/comment/34058
https://www.dropbox.com/s/m6qe9ra97es9hj8/cetrimonium-chloride.pdf?dl=0

It says that CETAB was teratogenic and embryotoxic (trough intraperitoneal injection at 10+ mg/kg)
but CETAC seemed safe demally at 2%.

So it looks like they are (wrongly) extrapolating injected CETAB toxicity to dermally applied CETAC.
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