The GentleMax Pro, is the Gold Standard for Laser Hair Removal in all Fitzpatrick skin types. It is a dual wavelength laser platform that combines the fastest and most powerful 755 nm Alexandrite laser with an equally powerful 1064 nm Nd:YAG laser for high performance treatment capabilities in terms of speed, efficacy, ease-of-use, performance, safety and patient satisfaction.
Laser hair removal is based on preferred absorption in the chromophore melanin, which is mainly found in the hair shaft, and in a smaller amount in
the skin, depending on the Fitzpatrick skin type. The target is the pigment in the hair follicle which absorbs the heat that destroys the cells lining the hair follicle specifically around the bulb, bulge, and vascular supply.
Wavelengths between 700-1000 nm are used as the absorption coefficient of melanin is much higher than water and Oxyhemoglobin. At these wavelengths light is primarily absorbed by the hair shaft, and the generated heat is diffused to the follicular epithelium. In general, melanin absorption decreases as wavelength increases (Figure 1). Short wavelengths with higher absorption are more efficient but less safe in darker skin types. Longer wavelengths, increase penetration depth, allowing a larger variety of hair to be treated and are also safer for dark skin. In longer wavelengths, because the absorption of light by melanin decreases, higher fluence levels are needed to achieve thermal damage.
Pulse Duration – The thermal relaxation time is the time required for the targeted structure to cool to half its peak temperature immediately following laser exposure. The pulse duration should be shorter than the TRT of the target, to confine the thermal damage and spare surrounding skin structures. Pulse durations that are too long will lead to insufficient heating of the targeted chromophore and may result in suboptimal treatment
(1), and if too short may lead to side effects such as pigment changes, burning, blistering and scarring.
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