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Retinoids and Concomitant Aesthetic Procedures
Published in Ayse Serap Karadag, Berna Aksoy, Lawrence Charles Parish, Retinoids in Dermatology, 2019
Zekayi Kutlubay, Ayşegül Sevim Keçici, Yalçın Tüzün
Selective photothermolysis is the principle on which laser hair removal is based, where the target chromophore is the melanin in the hair follicle (4). By this principle, the collagen is untouched and the epidermis is not affected. Theoretically, the procedure should be safe even among patients on isotretinoin. According to a number of studies, use of diode, long-pulse flash lamp, and neodymium-doped yttrium aluminum garnet (Nd:YAG) lasers for hair removal are reported to be safe on patients concomitantly taking isotretinoin (19–22).
Aesthetic
Published in Tor Wo Chiu, Stone’s Plastic Surgery Facts, 2018
Laser hair removal at home has become popular. Most FDA cleared (which is slightly different to ‘approved’) ‘laser’ devices, e.g. Sik‘n (RRP 220 USD for the Flash&Go compact), usually use IPL (sometimes called HPL – home pulsed light). The Tria Laser 4X is the first and only diode laser designed for home use and remains popular (RRP 450 USD).
Products used on the vulva
Published in Miranda A. Farage, Howard I. Maibach, The Vulva, 2017
Miranda A. Farage, Lisa Lennon
In laser hair removal, the laser is moved over the skin and the light passes through and is absorbed by the melanin (pigment) in the hair follicles (46). It is believed that the heat generated by the laser breaks apart the follicle and the hair falls out over a period of approximately 2 months. The treatment is best suited for fair-skinned people with dark hair. In darker-skinned people, the skin pigment can absorb the laser before it reaches the hair follicle, making the treatment less effective. Light-colored hair may not contain enough melanin. Multiple treatments are required to achieve a meaningful reduction in the amount of hair on the area. Adverse effects of laser hair removal include extreme sensitivity of the treated skin. Rarely, peeling, blistering, and burning of the skin may occur, as well as brown spots or a slight loss of pigment in areas where the laser has been used.
Hair removal and psychological well-being in transfeminine adults: associations with gender dysphoria and gender euphoria
Published in Journal of Dermatological Treatment, 2021
Nova J. Bradford, G. Nic Rider, Katherine G. Spencer
Laser hair removal, or ‘photoepilation,’ uses light waves at a specific frequency to selectively target melanin in the hair shaft, applying heat and destroying the follicular epithelium (11,16,17). Though different frequencies yield different results, laser hair removal is typically more efficacious for individuals with light skin and dark hair (12). Individuals often receive multiple sessions of laser hair removal to achieve greater degrees of hair reduction – typically between two and six treatments, allowing at least six weeks between treatments (11). In a meta-analysis of randomized controlled trials, Haedersdal and Gøtzsche (16) reported 50% hair reductions achieved up to six months after final laser hair removal treatments. Additionally, in a small study of 12 hair removal patients, Görgü et al. (18) reported lower pain levels associated with laser hair removal than electrolysis. However, laser hair removal can still be very uncomfortable, including significant painful and burning sensations during treatment (19).
The “in’s and outs” of laser hair removal: a mini review
Published in Journal of Cosmetic and Laser Therapy, 2019
Mandy M. Thomas, Nicolette N. Houreld
The breakthrough in selective photothermolysis and the application of this concept for efficient and lasting hair removal has provided the cosmetic industry and medical practitioners with several highly effective laser and IPL devices (3). According to the American Society for Aesthetic Plastic Surgery, laser hair removal was in the top three non-surgical procedures performed in 2016, coming below botulinum toxin treatments and hyaluronic acid treatments, and accounted for 1,035,783 procedures (4). Ideal candidates for light-based treatments mostly still consists of light-skinned patients with dark, thick hair (5). A variety of lasers and pulsed light sources are available for the purpose of hair removal, with efficacy and safety differing from wavelength to wavelength, and include neodymium-doped yttrium aluminium garnet (Nd:YAG) lasers (1064 nm), ruby lasers (694 nm), alexandrite lasers (755 nm), diode lasers (810 nm), and although technically not a laser, a variety of IPL devices. The untrained use of these high-powered devices is coupled with unfavourable side effects and can cause severe complications. Therefore, sufficient regulations are necessary. This review article looks at the mechanism of action behind laser hair removal, as well as some of the devices used, associated hazards and regulations.
Laser-assisted hair removal for facial hirsutism in women: A review of evidence
Published in Journal of Cosmetic and Laser Therapy, 2018
Light amplification by stimulated emission of radiation, otherwise widely known by the acronym LASER, is a light source that emits energy within a certain portion of the electromagnetic (EMR) spectrum. In clinical practice, laser wavelengths can be categorized into 200–400 nm ultraviolet (UV), 400–760 nm visible light (VIS), 760–1400 nm near-infrared (NIR), 1400–3000 nm mid-infrared (MIR), and longer wavelengths in the far-infrared (FIR) range (3). Laser light is distinctive to other light sources as it possess the following properties: 1. Laser light is monochromatic – it is a single color light, and therefore of a single wavelength; 2.Laser light has narrow beam divergence, measured in milliradian (rad); 3. Laser light is coherent, which means light waves proceed in phase, both in space and in time. A laser device emits energy from a light source (usually a xenon lamp) into a medium (the laser rod), which could be solid, liquid, or gas confined in a chamber, where pockets of energy propagates before the escape through a partially reflecting mirror or unidirectional slit exit as an intensified beam. Laser-Tissue Interaction is the mechanism of action of laser on tissues – in the case of Laser Hair Removal, the photothermal interaction between laser and hair follicle. This is selective photothermolysis (4).