Electrolysis
Electrolysis is the only permanent hair removal method. It works by inserting a needle into the hair follicle and destroying or altering the follicle with electricity. The three types of Electrolysis are: Galvanic, Thermolysis, and Blend.
Below is a short clip of Electrolysis Hair Removal.
Permanent Hair Reduction and Semi-Permanent Hair Reduction
The main form of permanent/semi-permanent hair reduction is photoepilation. This method uses light to destroy the hair bulb and the growth cells resulting in the hair being unable to grow back in those particular targeted follicles. Because there will be some hair regrowth after these treatments, they can not be referred to as permanent hair removal, but rather permanent hair reduction. In many cases (such as laser hair removal) 75%-90% of hair follicles are destroyed at the end of their treatment cycle (usually consisting of multiple treatments) reducing the amount of hair re-growth greatly. The two main types of photoepilation are Laser Hair Removal and Intense Pulsed Light (IPL).
Laser Hair Removal
In this method, a laser beam is pointed at the skin and, when triggered, impairs hair follicles. It is most effective in the anagen phase of hair growth. The video below is by the American Academy or Dermatology and explains a little about the treatment.
Intense Pulse Light (IPL)
This treatment utilizes short but powerful flashes of light at the skin. This allows them to destroy the hair bulb without burning the surrounding skin. This method is used for hair reduction, age spot, pigmentation, wrinkles, and on spider veins.
Find out more at DermNet NZ
Waxing
Waxing is most common hair removal technique by estheticians. Waxing involves spreading wax (either hard or soft wax) over a client's skin and quickly removing it. Because the hair sticks in the wax, the hair is removed with the wax. The videos below show various waxing methods using soft and hard wax on different parts of the body.
Epilation VS Depilation
Epilation is hair removal that involves removing have from the bottom of the follicle. In Depilation, hair is removed near or at the level of the skin. Both of these methods of hair removal are temporary.
Epilation: Tweezing, sugaring, waxing, threading
Depilation: Shaving, depilatory cream (chemical depilation cream that dissolves skin at the skin level)
Tweezing
Tweezers are used to pull hairs out one at a time.
Another methods of tweezing involves electronic tweezers. These send radio frequency energy down the hair and
destroy the papilla.
Sugaring
Sugaring uses a thick, sugar based paste as a wax-type base and works the same way as waxing. The
solution is water soluble and is a great alternative to waxing for individuals with sensitive skin.
Threading
Threading uses cotton thread to pull out hair from the follicle by twisting the hair around the
thread.