My skin looked great most of the time, albeit, sometimes oddly yellow and too dry, but my hair was looking terrible most of the time. use it.I have been using prescription Tretinoin (0.05%) on and off for more than 20 years (I am 50) and have only been pleased. :)This article is horribly misleading, and its author failed to do her research. Two days ago I thought about the retinol creams I was using day and night. I'm super dizzy and my knees and legs are killing me. Now I just hope the grey hair will go away too.Kathy, anecdotal evidence is not science. And have had digestive issues since. Very informative!>Marta wrote: I don’t really want to use something that is a known toxin – especially as these days there are so many alternatives.