For what it's worth, I recently bought some stuff from Unique and I'm a little disappointed :/ I had read good reviews about them but they were older (from 2012-13) and after I bought some Osta and S4 I found out that Unique lost their original supplier like a year and a half ago? Something like that. I was on their Osta for 8 days and the boys went from 2"-2.2" to damn near 1.5"... I was getting shut down hard after 8 days. Also noticed increased facial hair (the new, small and thin hairs that I've never had before) so I feel like it was mixed with a mild, cheap PH. And I'm not sure if it was the Osta or S4 but I have these blisters on my arms the size of dimes, one is getting a little larger and starting to scab over. Almost the size of a nickle today. The S4 scared me though, I understood the side effects of it before I started taking it, but after I believe it was day 5 or 6 I had a full day of vertigo... I couldn't balance myself so I stopped taking it and my balance came back after a day and a half. Hopefully mine was just a bad batch or something but if you get some please share what happens. I'd like to know if this is a serious problem or not.