Shreesai Skin Clinic & Laser Center

Excimer light treatment is a development of whole-body narrowband UVB. Narrowband UVB delivers energy at a wavelength between 311–312 nm for the treatment of localized psoriasis and vitiligo. The disadvantages of narrowband UVB include irradiation of the whole body (even if the psoriasis is localized) and the need for a high number of treatments (usually between 15 and 40 sessions).The UV ray generated by the excimer light is delivered via a hand-held wand that focuses on the lesion. Compared with narrowband UVB, its advantages are:Healthy skin surrounding the affected areas is not exposed to radiationDifferent templates are used according to the area to be treatedA higher dose of radiation can be delivered, with a reduced cumulative dose of irradiationIn some cases, a shorter course of treatment is effectiveIt can be used in areas difficult to reach with conventional phototherapies, such as ears and genitalsIt can be used in children, as it is a relatively friendly–looking piece of equipment.

Diode lasers use the principle of selective photothermolysis (abbreviated SPTL) to target specific chromophores in the skin, usually melanin or blood. The lasers damage the chromophores by selectively heating them while leaving surrounding tissue unharmed. When treating unwanted hair, for example, the melanin in the hair follicles is targeted and damaged which results in the disruption of hair growth and regeneration. A diode laser can be complemented by cooling technology or other pain-reducing methods which improve treatment efficacy and patient comfort.Laser energy is selectively absorbed by the melanin in the hair follicle and converted to heat, diffusing to and injuring stem cells in bulb and bulge.Most hair is permanently removed.Hair that does regrow is finer and lighter than before.

The Q-switched Nd:YAG laser emits a longer, near-infrared ray of 1,064 nm that is capable of penetrating into the deeper regions of the skin. Therefore, it is able to destroy deep-seated dermal melanocytes by selective photothermolysis