Silk’n SensEpil vs. TRIA Hair Removal

At-home laser hair-removal systems represent a rapidly growing industry. With increasing availability of these products, consumers may be left wondering which one is best. Two of these products are the Silk’n SensEpil, and the TRIA.

What is Similar?


The technology available in the Silk’n SensEpil and the TRIA Hair Removal System are very similar. Each device uses light-based technology that targets the follicle of a hair, permanently disabling its growth. This is the same light-based technology that has been used by laser hair removal professionals for over 50 years. The technology of these devices has been clinically proven, safe, FDA cleared, and is dermatologist recommended.


The SensEpil and the TRIA are each used in very similar ways. The user of each device must first shave (and not wax, or pluck) the anticipated treatment area. With each handheld device, the built-in skin sensor can be placed against the skin to ensure safe use* (See “Who Can Use It?” below). After each pulse of light, each device is glided across the skin, so the treated areas slightly overlap. The SensEpil and TRIA both feature variable treatment levels, and it is recommended that users begin his or her treatment on lower settings to determine the highest tolerable limit of use. The devices are intended to be used about once every two weeks, and best results are obtained after about 6 months of use. After 6 months, permanent results should have been obtained, and only occasional touch-ups may be necessary. Note: The SensEpil, as well as the TRIA are safe for use on the neck down, and are not safe to use on the face.

Side Effects of Use

Since the mechanism of treatment is similar with the SensEpil and the TRIA Hair Removal System, the side effects are also similar. After each device’s first use, some mild redness and skin irritation is normal in some individuals. This may last about 24 hours. After several uses, the user should notice a visible reduction in hair regrowth. After several months of treatments, the user’s hair will grow in lighter and finer, with less regrowth.

Sensation of Treatment

Since each device utilizes the same technology for disabling hair growth, users of each device can expect to experience a warm and tingling sensation after each pulse of light is delivered. Prior to each pulse of light, each device delivers a beeping sound, so users know the device is active. A slight difference may exist, in that users of the TRIA Hair Removal System may feel the sensation of a rubber band snapping against his or her skin.

Who Can Use It

The Silk’n SensEpil and the TRIA are both safe to use on women and men with fair, to light brown skin. Since each device’s laser-like light targets melanin present in the hair, consumers with darker skin (more melanin) may have a negative reaction on his or her skin. Each device can also target only brown to black body hair. Consumers with blonde, red, gray, or white hairs will not experience results with either device.

What is Different?


The Silk’n SensEpil At-Home Laser Hair Removal Device is powered through a standard wall outlet, allowing for continuous use. The primary maintenance required on the SensEpil is the replacement of the treatment bulbs. These bulbs deliver the light that disables the growth of body hair. Each bulb is designed to safely deliver about 750 pulses of light. This is enough pulses to treat the entire body one time, or a smaller area multiple times. The bulbs are inexpensive, and easily replaced.

The TRIA Hair Removal System is battery-powered by a built-in, rechargeable battery. Each battery charge lasts about 30 minutes when used on a high energy level. This is enough charge to treat a bikini line, and two underarms. Recharging the battery can take as little as 2 hours, or as many as 6 hours, depending on the method of charging.

Treatment Area

The treatment area of the Silk’n SensEpil Hair Removal Device is six times larger than the treatment area of its nearest competition. This allows users of the device to treat a larger area in less time, allowing for more convenient use. Users of the SensEpil can treat an entire leg in as little as 10 minutes. With the TRIA Hair Removal System, legs can take around 20 to 30 minutes.


The technology utilized by each device is very similar. They used FDA cleared, clinically proven technology to permanently disable the growth of body hair. The results of each device are visible after just a couple of uses, separated by about two weeks, while best results are achieved after multiple uses.

The SensEpil is under constant power from a standard wall outlet, while the TRIA is powered by a rechargeable battery that lasts about 30 minutes. The SensEpil’s treatment area is much larger than the TRIA’s, allowing for much faster treatment of a given area. With all things being equal, the Silk’n SensEpil is the better hair removal device for those who want to spend less time on permanent at-home hair removal.

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