When I began in Jan, I was using the Neo Strata HQ+ (4%HQ + 10% glycolic acid). It was working very well for me but I switched to another product ( HQ4% and Tretinoin 0.1%) because of the price (I'm using it all over my entire body). I saw a noticable result after only 2 weeks (went down one foundation shade!). The Neo Strata home mocrodermabrasion kit is good too. Good luck!