• General

  Safety Test for Shampoos

  Posted by palash1865 on March 22, 2016 at 9:30 am

  Hey

  
  

  Can anyone explain how patch tests are done for shampoos?

  
  

   A lot of articles state “patch-testing directly with shampoos is fraught with difficulty because there may not be a dilution that is dilute enough to avoid false-positive irritant reactions while still being concentrated enough to avoid false-negative reactions.”

  
  

  Can someone elaborate?

  palash1865 replied 8 years, 1 month ago 1 Member · 0 Replies
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