Ann Dermatol.  2015 Feb;27(1):21-25. 10.5021/ad.2015.27.1.21.

Alternative Method for Creating Fine Hairs with Hair Removal Laser in Hair Transplantation for Hairline Correction

• Park HS
• Kim JY
• Choe YS
• Han W
• An JS
• Seo KK

• KMID: 2264832
• DOI: http://doi.org/10.5021/ad.2015.27.1.21

Abstract

BACKGROUND
Foremost fine hairs in the frontal hairline region are critical in hair transplantation for hairline correction (HTHC) in women. However, there are few studies on a nonsurgical revisionary method for improving an unnatural foremost hairline with thick donor hairs resulting from a previous HTHC.
OBJECTIVE
To investigate the efficacy and safety of using a hair removal laser (HRL) system to create fine hairs in Asian women with thick donor hairs.
METHODS
Through a retrospective chart review, the HRL parameters, hair diameter (measured with a micrometer before and after the procedures), subjective results after the procedures, adverse effects, and the number of procedures were investigated. The reduction rate of the hair diameter was calculated.
RESULTS
Twenty-four women who received long-pulse Neodymium-Doped:Yttrium Aluminum Garnet therapy after HTHC were included. The parameters were as follows: delivered laser energy, 35~36 J/cm2; pulse duration, 6 ms; and spot size, 10 mm. The mean number of laser sessions was 2.6. The mean hair diameter significantly decreased from 80.0+/-11.5 microm to 58.4+/-13.2 microm (p=0.00). The mean rate of hair diameter reduction was -25.7% (range, -44.6% to 5.7%). The number of laser sessions and the hair diameter after the procedures showed a negative correlation (r=-0.410, p=0.046). Most of the patients (87.5%) reported subjective improvement of their hairlines. Most complications were transient and mild.
CONCLUSION
HRL can be an alternative method for creating fine hairs and revising foremost hairline in Asian women with thick donor hairs.

Keyword

Hair; Transplantation; Hair removal; Lasers; Nd:YAG

MeSH Terms

Aluminum
Asian Continental Ancestry Group
Female
Hair Removal*
Hair*
Humans
Retrospective Studies
Tissue Donors
Transplantation
Aluminum

Figure

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  Fig. 1 (A) The resulting hairline after hair transplantation for hairline correction in an Asian woman with thick donor hairs. (B) A more natural hairline after revision, by creating fine hairs with hair removal laser (long-pulse Neodymium-Doped:Yttrium Aluminum Garnet).

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  Fig. 2 (A) Comparison of hair diameter measurements before and after laser treatment under light microscopy. (B) Statistically significant reduction of hair diameter after the laser treatment. *p<0.05, paired t-test.

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