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Objectives: This study aimed to assess the effectiveness and safety of a combined triple-wavelength epilation laser for skin rejuvenation.

Introduction: Hair removal lasers have long been used based on the theory of extended selective thermolysis. The melanin pigment on hair structure absorbs certain wavelengths, and heat diffusion to the surrounding structure results in epilation. Some physicians have said skin rejuvenation effects are shown after laser hair removal. Due to its ability to deliver thermal energy from the superficial to deeper levels of the dermis, a combined triple-wavelength laser (755 nm, 810 nm, and 1064 nm) can be more effective for skin rejuvenation.

Materials / method: Twenty-eight female patients seeking skin rejuvenation treatment were enrolled in the study. Each participant underwent five consecutive treatment sessions spaced two weeks apart. Both the dermatologists administering the treatments and the patients themselves observed noticeable clinical improvements in aging-related skin changes. Biopsies were conducted on the facial areas of consenting patients before the initial treatment and again two weeks after the completion of the final session.

Results: Both patients and evaluating dermatologists noted significant clinical improvements. According to the patient satisfaction questionnaire, 78% of participants reported self-assessed improvements exceeding 25%. Furthermore, dermatologists objectively assessed an improvement exceeding 25% in 86% of patients. Histopathological analysis showed increased collagen and elastic bundles distributed across the dermis. Apart from transient pain experienced during treatment, no severe adverse effects were reported.

Conclusion: The results of this study indicate that the combined triple-wavelength laser could serve as a viable and safe nonablative choice for skin rejuvenation.

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Objectives: The technique of LHR has evolved drastically over the recent past. From the single wave lengths produced by media like Nd:YAG crystal to single wave length diodes to multiple wavelength diodes the world of LHR has seen a sea change.

Introduction: LHR was the most sought after laser technique in the initial days since it enjoyed the maximum awareness both amongst the patients and the doctors. At that time lasers were almost synonymous with LHR as most of the people knew only about the hair removal systems. The LHR technique has come a long way from the initial days of a single wavelength to the present day of in motion and multiple wavelength techniques

Materials / method: Broadly speaking the shorter wavelengths like 694 nm ruby are better absorbed by melanin than the longer ones like 1064nm and therefore give better results in hair reduction. However the shorter wavelengths are not safe for the skins of color and can be associated with more side effects. The 810nm diode laser is a perfect balance of efficacy and safety in this situation

Results: A semiconductor laser converts electric energy into light energy. This happens because of the partial conduction properties of the semiconductor material. By putting specific amounts of impurities into the semiconductor material(doping) the number of negative and positive electrons can be changed. This can help us produce different wavelengths from the same semiconductor

Conclusion: The technique of LHR has evolved extensively over the recent past. From single wavelengths to in motion technique to multiple wavelengths shot at the same time using the semiconductor diode lasers. The semiconductor diodes have been the main force behind this evolution
The advantages of diode lasers are
-Large spot sizes
-In motion technology
-Solid state lasers
-Ability to produce multiple wavelengths

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