I was using this type of hair removal for years when I started getting rid of my hair. My favorite brand and the brand that also was the most effective was the name brand of my drugstore. If I remember correctly I would be hair free for two to three days, less than a week and more than one day I remember for sure. Nair I used once and it is the only time I ever had an allergic reaction to a beauty product (and ive used products with nuts which im allergic), it was awful, my skin was burned and it took more than one week to come back from this. I stopped this after a few years then shaved and I have been going to an aesthetician for waxing for years now. My dream is to have enough money one day to use electrolysis or laser for all of my body hair including my face (having electrolysis done on my eyebrows and its awesome). I would think these hair removal creams are now better from when I was a teenager so id I ever stop waxing I may try it out before trying shaving again.