I think it's important for potential buyers to understand the principle this works on. Both laser treatments and IPL function by zapping the hair follicles with light energy which then kills (or at least damages) the follicle in many cases. Each time a follicle is treated, the chance that it will be permanently destroyed goes up. Now, the light is absorbed more by darker colors, so if you have very dark hair, and that hair is in a growth phase, you stand a better chance of this working. The lighter your hair, the less well this sort of treatment works. And follicles have cycles, so with every treatment, some will be in growth cycles where there's a hair to gather that energy and some won't be. Which is why all forms of light-based hair removal take many treatments over several months.Laser works faster, but IPL is much less costly and can be done at home. This device has more pulses than you'll ever need, so for well under the cost of one professional laser treatment, you can do your own treatments at home as often as you'd like. Bargain! Keep in mind that, though, that if you've got freckles, tanned skin, or any other areas of higher pigment, they'll get hot, too, and can become uncomfortably warm. (Laser treatments tend to be less uncomfortable in that respect.) Some IPL devices have a cooling function built in; this one doesn't. No worries; keep an ice pack wrapped in a think towel nearby and apply to each area for a minute or so after treatment. It will quickly cool down. Moisturize when you're done.Okay, so all that info applies to any IPL device. How does this one differ from others? Well, the "regular" price as of today is insane, but there's also a coupon that brings it down to a very competitive level. What's unique is that there are two extra levels of treatment you don't normally see. In addition to hair removal, there are also settings to stimulate collagen production (which keeps skin looking youthful) and to kill acne-causing bacteria. Do they work? I couldn't say; I don't have acne and I've not seen any skin tightening on my legs yet - but maybe! It does, however, work for hair removal.The machine powers up quickly, is easy to control, and equally simple to use. In manual mode, you need to pull the trigger for the light to "fire." That's great for your underarms and face because you want that amount of control. With legs, though, you're covering a lot of acreage and your finger would get tired. Happily, there's also an automatic mode so that, each time the head comes in contact with your skin, it will fire my itself. I can do both legs, front and back, in about 10-15 minutes.Be sure to use the included sunglasses (or your own) to protect your eyes, and always shave first to avoid a nasty burnt hair smell. Treat once a week for about 3-4 months, and then (if you want to) you can drop back to every other week (or adjust as needed). I do think that it's something you need to keep up with probably forever - because sometimes treatment only slows down growth for some follicles. If you keep treating on an ongoing basis, though, you'll find fewer and fewer hairs that need to be shaved or plucked out.