Photoepilator light energy
The photo epilator light energy was launched in 1969 and was developed from research on laser hair removal. Photoepilers use a burst of filtered light directed at one hair at a time. After the focus of light, the hair is clipped. Any laser and light instrument used in the device is directed against the hair’s blood and melanin pigments and warms them. To allow this process, fiber optic probes were inserted into the hair follicle through which the light was illuminated. There are no clinical data published to support any claim of permanence, and there is no established data on its effectiveness.
This works by passing an electric current through the tweezers, which holds the hair to the skin’s surface by holding them for several minutes. Electricity enters through the hair to its roots and claims to permanently damage it. The scientific community has reservations since the claim that electricity destroys the hair root has no scientific support.
Transcutaneous and transdermal offers “permanent hair removal,” but to date, no clinical data have been published to establish the claim that permanent hair removal. It uses the idea of direct current for drug delivery (iontophoresis) without the use of a needle. A DC electrical current is passed through a conductive gel on the skin’s surface through an adhesive patch placed on it. The hair root is said to be permanently damaged by the electrical current traveling to the hair follicle.
Ultrasound hair removal
It claims that ultrasound waves are precisely channeled through the hair shaft and, in the process, are transformed into thermal energy that superheats the hair growth areas and inhibits regrowth. The waves are claimed to be attached to the hair shaft and not dissipate into the skin to avoid side effects. Ultrasonic hair removal offers ‘total hair removal’ and claims to be the ‘next generation of long-term hair removal devices.’ In some marketing material, they say that it is “The hair removal solution” and that “no additional hair appears in the same follicle, which shows that it is a long-term treatment.”
Permanent microwave hair removal
Permanent microwave hair removal is one of the most unusual permanent hair methods, and its safety and efficacy have not been scientifically proven. Microwave devices work similarly to those used in microwave ovens. Once absorbed, these waves cause the molecules for absorbing element to vibrate, resulting in the generation of heat. Therefore, the skin heats up, and, in theory, thermal energy destroys the cells that grow the hair. However, microwave heating’s indiscriminate nature is its biggest drawback and is the reason for its limited use.