The aim of laser hair removal is to destroy the hair’s bulb through targeting the bulging zone at the hair's base.
If the hair is dark, the area is pigmented. A laser is a device which produces a specific kind of light formed of one unique wavelength defining its monochromic characteristic.
Depending on the wavelength (different from one laser to another), photons producing that light will be more or less absorbed by the different structures around and especially the colours.
Consequently, a pigmented hair represents a brown or black target. Hair removal lasers are highly absorbed by this colour due to the natural skin pigmentation called melanin. Once absorbed, the light turns into heat which will destroy the hair's bulb. This is permanent hair removal.
Nowadays, laser hair removal is widespread but cannot be considered as common. It remains a medical treatment. Depending on the patients, some types of laser are more appropriate than others so all the parameters must be entirely mastered.
After several sessions, laser hair removal gives fully permanent results and patients rate it as excellent. Laser hair removal enables permanent results on large areas, which was, so far, very difficult to handle with electric hair removal (efficient only on small areas).
Techniques adapted to your needsThe laser works by producing an invisible ray of light absorbed by the hair follicles pigment. It damages it by heating it up, which disables the production of a new hair. It is made possible only if the hair is linked to its bulb and therefore in its growth stage.
They are numerous assuming the moment the hair contains enough melanin. The device must be adapted to the skin colour. Alexandrite lasers (755nm, see photo below) are the appropriate device for fair skins. Dark or black skins require the use of a special YAG laser (1064nm).
White and fair hair will not be removed by photons because of the lack of a pigmented target. However, in some areas properly depilated, new hair may grow (such as the back, or the chin for women), then a result will have to be maintained and hormonal stimulation may be required. Most of the time, hair usually grow back on the face. We estimate that 5% of patients tend to be resistant to laser hair removal, consequently, this technique may not be appropriate.
Pregnancy is obviously a contraindication that leads the interruption of treatment. Photo-dermatoses (skin diseases, sensitivity to UV rays or sunlight) or cold urticaria (during the treatment a cold airstream is used to cool the skin) are also reasons to interrupt treatment.
Side effects may appear such as darker or lighter round marks, especially on olive skin, which disappear within a few days or weeks. A rare but serious complication is skin burn, which goes away within a few weeks with an adapted treatment. The result is excellent, yet some sparse hair may remain and which can be destroyed through thermolysis.
Thermolysis or electrolysis hair removal is a technique used to permanently destroy hair. It consists in inserting a filament (close to the size of the hair) along the hair stem towards the bulb. A weak current is sent to the bulb via the filament which destroys the cells that grow and renew hair.
Thermolysis is perfect for small areas with a reduced hair density, such as eyebrows, upper lips, ears or other areas where there are only a few hairs. It is also used to finally get rid of thin and fair hair remaining after laser hair removal.
It will not be possible to use thermolysis if you follow a treatment based on Isotretinoin (acne treatment), if you have a dermatosis or an infection in the area treated, or a radiotherapy or chemotherapy treatment, a deficient immune system, a badly balanced diabetes, haemophilia, a high dosage anticoagulant treatment or is pregnant.
Thermolysis hair removal is definitely permanent and will avoid you using wax, shaving or hair removing cream forever. It is efficient at all levels, whatever the size, location or the colour of the hair on all areas of the body and will not leave any mark when done by a specialist.
An erythema (redness) then an oedema (swelling) at the base of each “thermolysed” hair will appear after the treatment . They disappear within a few minutes.
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