Laser therapies used for removal of unwanted hair is safer and remove leg hair more effectively when used separately than when used as a combination treatment, according to a report in the October issue of Archives of Dermatology.
Researchers of the Baqiyatallah University of Medical Sciences, Tehran, Iran, analyzed the results of using long-pulsed 755-nanometer alexandrite lasers (12-millimeter and 18-millimeter spot sizes) individually, using a long-pulsed 1,064-nanometer Nd:YAG laser (12-millimeter spot size) and using a combination of the Nd:YAG and alexandrite 12-millimeter spot lasers to reduce leg hair growth on four areas of the legs of 20 individuals (average age 32.6).
Participants received a total of four treatment sessions at eight-week intervals, and 15 patients completed the study.
Average hair density was measured with a hair counting device and special software and hair reduction was assessed through digital photographs before treatment and at eight- and 18-month follow up sessions. Adverse effects following treatment were also noted.
The average hair reductions 18 months after final treatment were 75.9% for the 12-millimeter spot size alexandrite laser, 84.3% for the 18-millimeter spot size alexandrite laser, 73.6% for the Nd:YAG laser and 77.8% for the combination therapy.
Average pain severity was higher in areas that received the alexandrite laser treatments than in those treated with the Nd:YAG laser.
Additionally, the highest incidence of pain was reported in areas that received the combination treatment. Areas with combination treatment were also more likely to experience hyperpigmentation.
“Despite other studies showing more efficacy of the alexandrite rather than the Nd:YAG laser, our trial results showed no significant difference between them,” the researchers conclude.
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looking forward for more information about this. thanks for sharing. Eugene