The Tria Hair Removal Laser 4X can be used on the underarms, bikini line, legs, arms, back, stomach and face (women's cheek line downward).

Tria say you'll need 8 treatments, one every two weeks, taking up to 3 months to see significant results. Then you can do touch-ups or additional treatments as you need them.

Also known as the Tria SmoothBeauty Laser, the Tria Age-Defying Laser is an at-home device that's been cleared by the FDA to treat fine lines and wrinkles on the face. It's also intended to firm up mildly sagging skin.

After the twelve sessions, my hair grew much finer but I can still see it on my arms, and I still have to shave my underarms once every three days or so. Even with shaving my underarms, I still see a shadow from the stubble which I hate very much.

Preparation for laser treatment: You can shave. Make sure that you shave the hairs on the area to be treated 1 day before treatment, so that stubble are visible. On the day of treatment: Make sure your skin is clean and fat-free on the day of treatment.

These devices are safe for amateurs to use at home, so you don't have to worry about singeing yourself in the name of smooth skin. (Still, make sure you follow the directions exactly - because laser.) But with less power also comes less effectiveness: The at-home devices don't work as well as the pro models.

Tria suggests using the hair removal devices once every two weeks, without skipping a treatment.

Use your laser pulses only when you need to Conserve your laser's battery by using it only once every two weeks, and you should be able to use the laser for 2-3 years with proper battery maintenance.

One of the best lasers for skin resurfacing, Fraxel Repair effectively treats deep lines and wrinkles, sunspots and age spots, uneven skin tone and texture, hyperpigmentation, scarring, and melasma. The laser is also renowned for producing long-lasting results.

Don't miss a treatment Tria recommends using the laser once every two weeks until the hair has stopped growing.

Tria laser should be used every 15 days to achieve optimal results without wasting pulses. Significant results occur within 3 months.

Tria's laser devices safely deliver over 3 times more hair-eliminating energy than any IPL or other at-home hair removal devices. This means each follicle that is within the treatment area will be exposed to more energy than within an IPL device.