I got this machine for my bikini lines and more sensitive areas, I was very worried at the beginning but it’s totally safe for me. It took a minute to see the results, and it works faster in my lighter skin areas. The first couple weeks I was scared and only had it on level 3, the hair still grew back pretty fast, but patience is the key. After couple of weeks, I got it up to level 7 and it works much better, my armpits completely hairless within 2 weeks of daily treatment, my Brazilian areas took around 7 weeks. But it’s definitely work very week. I have no adverse reactions, just be careful, start on the low level and test your skin as you go.