How to choose a laser for hair removal (different frequencies)
There are several factors to consider when choosing a laser for hair removal. These include:
- The type of laser: Different lasers use different wavelengths of light to target the hair follicles. For example, alexandrite lasers are often used for light skin, while Nd:YAG lasers are better suited for darker skin.
- The size of the laser spot: A larger spot size can cover more area in a shorter amount of time, but may not be as precise as a smaller spot size.
- The pulse duration: A shorter pulse duration can be more precise, but may require more passes over the skin to be effective.
- The cooling system: Some lasers have built-in cooling systems to help reduce discomfort during treatment.
- Cooling: Some lasers include built-in cooling systems that can help during treatment to lessen discomfort and unwanted effects.
Lasers used for hair removal typically operate at one of several distinct light frequencies or wavelengths. The wavelengths that are most frequently utilised for hair removal include:
Lasers used for hair removal operate at specific wavelengths of light that are absorbed by the pigment in the hair or hair follicles. Different lasers use different wavelengths, and the wavelength that is most effective for a particular individual depends on their hair and skin type, as well as their desired results.
Alexandrite lasers use a wavelength of 755 nm and are absorbed by melanin, the pigment that gives color to the hair and skin. They are effective at removing dark, coarse hair and can be used on most skin types.
Diode lasers use a wavelength of 810-830 nm and are also absorbed by melanin. They are effective at removing black, coarse hair on most skin types.
Nd:YAG lasers use a wavelength of 1064 nm and are absorbed by the pigment in the hair follicles. They can be effective at removing coarse, black hair on darker skin tones.
Intense pulsed light (IPL) treatments use a broad spectrum of light and are not considered lasers, but they can be effective for hair removal. They can be used on most skin types and are particularly effective at removing lighter, finer hair.
During a hair removal treatment, the laser or light-based device is directed at the skin, and the light energy is absorbed by the pigment in the hair or hair follicles. The heat from the light energy damages the hair follicles, inhibiting their ability to produce new hair. Multiple treatments are typically required to achieve the desired results, as hair grows in cycles and not all hairs are in the active growth phase at the same time.
It is important to consult with a qualified healthcare professional, such as a dermatologist or plastic surgeon, to determine the best laser or light-based device for your specific needs. They will take into account your skin type, the color and thickness of your hair, and any other relevant factors to recommend the most suitable treatment option.