Project Description How do different citrus essential oils compare in their composition and properties? < Back to All Share This Story, Choose Your Platform! FacebookTwitterLinkedInRedditTumblrPinterestEmail 2 Comments Amina February 19, 2019 at 5:02 pm - Reply Peace & Blessings Mr. Tisserand, regarding the subject of phototoxicity of certain EO’s, what is considered the time period that one would have be in the sun to trigger phototoxicity? Is there a threshhold of time one.could be safely in the sun before phototoxicity begins? Robert Tisserand April 7, 2019 at 11:53 am - Reply This is not known exactly, and depends on other factors, but could be just a few minutes. The longer the time, the more severe the reaction would be. Leave A Comment Cancel reply Comment Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.