Fazel Zeynab, Majidpour Ali, Behrangi Elham, Fathizadeh Sara, Nokandeh Maryam, Atefi Najmolsadat, Ghassemi Mohammad Reza
Department of Dermatology, Rasol-e-Akram Hospital, Iran University of Medical Sciences, Tehran, Iran.
Antimicrobial Research Center, Institute of Immunology Infectious Diseases, Iran University of Medical Sciences, Tehran, Iran.
J Lasers Med Sci. 2020 Summer;11(3):255-261. doi: 10.34172/jlms.2020.43. Epub 2020 Jun 21.
The axillary hair removal laser is one of the most often used procedures to treat unwanted hairs in that region. Employing this technology can be helpful in decreasing the bromhidrosis. In the present research, a clinical trial study over the effect of the hair removal laser on normal microbial flora at the axillary region is presented. The intervention group consisted of 30 women referred to the dermatologic clinic for the purpose of removing axillary hair by the alexandrite 755 nm laser and the control group consisted of 30 women referred to the same clinic for any other reasons. Both groups were evaluated for the type of bacterial strains on the first visit and after three and six months. The results showed that the sense of sweat smell improved by about 63% after the last laser session. The frequency of all bacterial strains decreased in the intervention group except which was significant. In the control group, there was no significant decrement in any bacterial strains and even the prevalence of more strains including Staphylococcus aureus and increased. Counting the mean bacterial colon showed a slight decrement of the bacterial count following the laser. The use of laser radiation, even with the aim of hair removal, can alter the microbial flora, and it can be accompanied by the improvement of the smell of sweat. The effect of the laser on different bacterial strains is quite different, which can depend on the amount of energy, the wavelength, the characteristics of the area under the laser, and also the structural properties of the membrane of the microorganism itself.
腋毛去除激光是治疗该区域多余毛发最常用的方法之一。采用这种技术有助于减少腋臭。在本研究中，进行了一项关于脱毛激光对腋窝区域正常微生物菌群影响的临床试验研究。干预组由30名因使用755纳米翠绿宝石激光去除腋毛而转诊至皮肤科诊所的女性组成，对照组由30名因其他原因转诊至同一诊所的女性组成。在首次就诊时以及三个月和六个月后对两组的细菌菌株类型进行评估。结果显示，在最后一次激光治疗后，汗臭味感觉改善了约63%。干预组中除[未提及的某种细菌]外，所有细菌菌株的频率均下降，这一情况具有显著性。在对照组中，任何细菌菌株均无显著减少，甚至包括金黄色葡萄球菌等更多菌株的患病率有所增加。计算平均细菌菌落数显示，激光治疗后细菌数量略有下降。即使以脱毛为目的使用激光辐射，也会改变微生物菌群，并且可能伴随着汗臭味的改善。激光对不同细菌菌株的影响差异很大，这可能取决于能量大小、波长、激光照射区域的特征以及微生物自身膜的结构特性。
