Technology and Areas of UseT4X: A diode laser FDA cleared used on legs, arms, bikini line (hair outside a normal underwear line), underarms, feet, stomach, back, chest, hands, and women's facial hair from the cheek line down.
S.S.: Uses IPL (intense pulsed light) technology for home hair removal, FDA cleared for permanent hair reduction that requires disposable lamp cartridges. The device is designed to be used on the body (excluding genitals) but can be used on the face from the cheekline down.
Notes: Although they can be used on the face, know that laser or IPL may stimulate hidden facial hair to grow in women.
Power and SettingsT4X: Cordless, hand-held rechargeable device with five adjustable power settings.
S.S.: Corded hand-held device with five adjustable power settings.
CompatibilityT4X: Those with light to medium skin tones (white, ivory, beige and light brown) and dark hair. White, gray, blond or red hair will not benefit from using the system.
S.S.: Best candidates are also with light to medium skin tones and dark hair. Shades of brown hair may also respond to the system, but typically require more treatments. Red hair may possibly benefit from treatments. White, gray or blond hair doesn't usually respond although the company does mention that some have noted results after multiple treatments.
Notes: The devices will target melanin (or color), so that is why dark hair benefits the most because it has the most color to absorb the heat to impair the hair follicle. On the flip side, those with dark skin tones cannot safely use either system because the melanin in the skin can also become attacked resulting in burns, scars or blistering.
SafetyT4X: Built-in skin sensor that checks skin tone and will unlock for use if it's in the right range.
S.S.: Built-in skin sensor that will pulse light or 'zap' if the skin is within a safe tone range. (This built-in skin sensor feature in only on the Silk'n SensEpil, not the original Silk'n.)
Recommended Treatment TimesT4X: Every week for three months until satisfied with results.
S.S.: A complete treatment time is considered anywhere between 18 - 24 months. Every two weeks for the first four sessions and to treat again when hair starts growing back, every four weeks. You go over area once with no over-lapping.
PainT4X: The feeling is likened to a rubber band snap and some heat. I used the original Tria with three power settings on the highest option for most of my bikini line. It didn't really hurt, but I could definitely feel the snap. As I got deeper into my bikini line there was more discomfort and I did turn the power down a notch. The latest model now has five power settings.
S.S.: It has been compared to a mild sensation of warmth and tingling. I used Silk'n SensEpil on the highest of the five settings on my legs and underarms. It didn't hurt at all on my legs and wasn't even a tiny bit uncomfortable. My underarms didn't hurt, but every now and then I would feel a snap.
Notes: Everyone has their own tolerance to pain/discomfort. You might feel more pain if you have sensitive skin, or very dark or thick hair. Not shaving hair completely down right before treatments will make more unnecessary discomfort. The first treatment usually hurts the most, and using the highest setting on either devices will also produce more heat, and of course, more likely to give you pain or discomfort.
Tria 4X vs. Silk'n SensEpil, continues on Page 2. Comparisons of speed, ease of use, life and cost and results.