The ruby laser, operating at a wavelength of 694 nanometers (nm), is among the first laser types used for laser hair removal. This type of laser uses ruby crystals as a medium to generate light. Due to its specific wavelength, the ruby laser is particularly effective at targeting specific areas Melanin, the dark pigment in hair and skin, making it a good choice for removing dark hair on light skin.
The ruby laser targets the melanin in the hair follicles. The light energy absorbed by the hair is converted into heat, which then.. Hair follicles It damages the melanin, thus inhibiting or delaying future hair growth. Because this laser has a high affinity for melanin, it is particularly effective for people with fair skin and dark hair. Treatment with a ruby laser is less effective on dark skin or lighter hair colors, as the melanin cannot absorb the laser as effectively in these cases.
Originally, the ruby laser was used for hair removal, but it is also used in the removal of tattoos, especially blue and black colors, and in certain pigment disorders.
Due to advances in laser technology and the development of newer lasers that are better suited for a wider range of skin and Hair types Although suitable, the ruby laser is used less frequently for hair removal today. Instead, other methods are often used diode laser, Alexandrite laser and Nd:YAG laser for use, which are more flexible in application and offer a lower risk of side effects, especially in darker skin Skin types.
