Hi, I have used many products on my face from Retin A, glycolic acid 10% to wash my face to Hydroquinone 4 also peels and microdermabrasion which I was doing once a week not too long ago. I just ordered the Glycolic Acid 50 and the Salicylic Acid 25% thinking my skin is very tolerant and I have never had reactions to what I have used or done in the past. Although after reading reading your forum I can see that you recommend using no more than 40% on the Glycolic Mask and 15% on the Salicylic, i am starting to think i made the wrong decision ordering such high streghth. What is your advice? should i go ahead and try it? I just what to make sure I wont regret the purchase and instead of helping my skin I will end up burning it.