hiii. this is soo coool!! but whats the difference between the blue peel and the other products plus this? they all are great;. ill buy it soon! very soon1 i just eed to knwo i its safe to use for 19year old. ive got acne marks on my face and back! help me choose what to buy! thankyou!! bdw. can this product be delievred to the uk?? pleaseee !!