I heard that story quite often, if it's true, how does it work?

Notice that I’m not talking about using coconut oil as a sunscreen (it’s another topic) but about the action of the sun on the oil and its impact on the human skin: will coconut oil degrade into something toxic under the sun, if so why?

And also, does the same degradation mechanisms applied for other oils (such as olive oil).

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    $\begingroup$ I'm not sure medical related questions are allowed on this forum. I think you would be better served by either consulting a legally certified physician or by checking medical information sites online. $\endgroup$ – shre_sudh_97 Jun 26 '16 at 15:07
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    $\begingroup$ I do not understand why this was closed: "I’m not talking about using coconut oil as a sunscreen" makes it pretty clear that the interest lies in reactions due to UV, not the medical apects. $\endgroup$ – caconyrn Jun 26 '16 at 17:29
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    $\begingroup$ I also believe it can be answered from a objective chemistry point of view, hence I recommend reopening. However, I am not yet overruling the vote of the community. $\endgroup$ – Martin - マーチン Jun 28 '16 at 6:52
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    $\begingroup$ @shre_sudh_97 There is a misunderstanding : the question is not about health but chemistry. And I did not find anything on the web about this chemical mechanism (if it occurs). Please reopen the question. $\endgroup$ – Lisa Jul 2 '16 at 8:55
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    $\begingroup$ @shre_sudh_97 I agree, the "safe" could be understood in that way, so I removed it. The question concern the chemical mechanism about this skin-sun-UV-oil interaction. So could you please reopen the question? $\endgroup$ – Lisa Jul 18 '16 at 7:49