Hi Kayla,
I've used Prevage MD, the highest strength of idebenone which is an anti-oxidant, sold in Drs offices. I think they push it because it's made by Allergan, who supplies them with Botox and Restylane. It can be very irritating to some ppl, even causing bad rashes in some.
I didn't think it was all that...I use my vitamin C serum and get better results as far as skin smoothing. It's one of those "Emperor's New Clothes" products that are marketed as "protectors", so we don't know if it works til later....
I wouldn't waste my money and repurchase; there are plenty of anti-oxidants out there that are cheaper.