I've been using demologica for about a week now and it is brilliant! I've been suffering with adult acne for about a year and have tried everything to get rid of it, but nothing has worked...until now, someone recommend dermalogica to me so thought I would give it a go, and I have noticed a huge difference in my skin, I still have a few spots but it's only been a week and its a hige improvement so far! my skin is clearer, it's shiny and it just looks cleaner, I feel so much better about my skin already, the only thing I would say is that in the medi bac kit you get a spot concelear and for me it just doesn't work, I put it on a spot and it just made it look worse, as it dried and flaked but everything else in the kit is fantastic, I would definitely recommend to anyone who is suffering with adult acne, and the bottles are small but they are deceiving, you only need a small amount of each product.