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Ethylhexyl Dimethyl PABA

Also-called-like-this: Padimate O, Octyl Dimethyl PABA, Eusolex 6007
What-it-does: sunscreen


Ethylhexyl Dimethyl PABA is a chemical sunscreen agent that protects in the UVB range (290-320 nm) with a peak absorbance at 312nm. Other than that, we struggle to write anything positive about this guy, as it is photo unstable (looses 10% efficacy in 20 mins and 50% in 85 mins), not an unfrequent allergen in sunscreens and shows some endocrine effect in animal studies. 

All this does not mean that it is not considered safe as used, it is (and is approved up to 8% in the EU and US and up to 3% in Japan), but we do think that there are plenty of other and better UV filters out there. 

Show me some proof

  • Pharmazie 62: 449–452 (2007), Study of the efficacy of 18 sun filters authorized in European Union tested in vitro
  • Couteau, Céline, et al. "Study of the photostability of 18 sunscreens in creams by measuring the SPF in vitro." Journal of pharmaceutical and biomedical analysis 44.1 (2007): 270-273.
  • Michelle Wong, The LabMuffin Guide To Basic Skincare, page 83, Padimate O

Products with Ethylhexyl Dimethyl PABA