Effectiveness of short‐pulse width Nd:YAG in laser hair reduction

Abstract

Introduction: Laser hair reduction (LHR) is a safe and effective way of reducing unwanted hairs over body. Long-pulse Nd:YAG laser has over the years, been proven to be particularly safe and effective in darker skin types. While conventionally, long-pulse Nd:YAG laser has been used, recently short-pulse width Nd:YAG laser of 0.6-1.6 ms which is 10-50 times less than the standard method (long-pulse) of Nd:YAG LHR, has become available. Objectives:To study the effectiveness of short-pulse width Nd:YAG laser in LHR in Indian patients. Material and methods:This was a prospective observational study conducted over a period of 1 year. Fifty female patients with fitzpatrick skin type 3-5 were included.Patients underwent four sessions of LHR, with an interval of 6 weeks and then follow up was done for 6 months after the last session. Results:The mean age of patient was 29.92 years ranging from 17 to 48 years.After finishing four sessions of LHR procedure 58%, 34%, 6%, and 2% of the patients showed excellent, good, moderate, and poor improvement respectively. No complications were seen during the treatment and after follow-up. Statistical analysis by paired t test showed the results to be statistically significant. Conclusion:Hair reduction using unique short-pulse width Nd:YAG laser is easy to use, safe, and effective in Indian skin. K E Y W O R D Slaser hair reduction, Nd:YAG laser, short-pulse width

Vellus hair removal with 1064‐nm neodymium: Yttrium–aluminum–garnet laser: A prospective study

“…The efficacy of Nd:YAG laser in terminal hair reduction was reported between 60% and 80% in various studies. [3][4][5] However, its clinical efficacy regarding vellus hair reduction was not statistically significant in this study and we could not find any similar study in literature to compare our results with. Considering our limited number of patients and laser sessions, further prospective studies with more patients, longer duration of laser treatment, and using various setting parameters including higher fluence and longer pulse duration are needed to validate our results.…”

Comparison of submillisecond pulse (FRAC3) and long‐pulse 1064 nm Nd:YAG laser hair removal

“…These findings can be attributed to lower fluence used due to higher peak power achieved with shorter pulses. Another advantage of shorter pulses is also better efficacy when targeting fine hair and which is not possible with longer pulse duration Nd:Yag 16,17,20 …”

“…Another advantage of shorter pulses is also better efficacy when targeting fine hair and which is not possible with longer pulse duration Nd:Yag. 16,17,20…”

“…This can be attributed to higher peak power when shorter pulse are used. Therefore, lower fluence can be used while maintaining the efficacy 16,17 and having less pain and side effects even without cooling of the treatment area. 18,19 On the contrary, the short pulse duration is having a better efficacy when targeting fine hair and that was not possible with longer pulse duration Nd:Yag.…”