I don't want to sound insensitive here, I'm just thinking... if the CoQ10 does it's job, yet you react and get a rash, that still doesn't sound too bad (assuming it goes away in a reasonable amount of time). Don't get me wrong, a rash isn't fun, especially on the face. But as long as there is no stronger reaction, I think it would be worth it, especially as a one-time thing to kill parasites!