- Males – Increase of 21.6 hairs/cm² at 26 weeks over baseline
- Females –Increase of 20.5 hairs/cm² at 26 weeks over baseline
- Significantly greater increase in subject assessment of Thickness and Fullness of hair
- No serious side effects reported
In the male study 95% of the subjects in the HairMax treatment group exhibited hair growth at 26 weeks.
- Subjects, in the HairMax LaserComb group grew an average of 21.6 hairs/cm² vs. 4.3 hairs/cm² for subjects in the control device group (p<0.0001) .
- Subjective assessment of Thickness and Fullness (density) of hair at 26 weeks, were statistically significant for the HairMax group compared to the control device group (p=0.0114).
- The HairMax was well tolerated with no serious adverse events reported and no statistical difference in treatment groups.
In the female study, 100% of the subjects in the HairMax treatment group exhibited hair growth at 26 weeks.
- Subjects in the HairMax LaserComb group grew an average of 20.5 hairs/cm² vs. 2.7 hairs/cm² for the control device group (p<0.0001).
- Subjective assessment of Thickness and Fullness of Hair (density) at 26 weeks, were statistically significant for the HairMax group (p=0.0345).
- Subjects in the HairMax® LaserComb treatment group had significantly greater increase in mean terminal hair density than subjects in the placebo group (p<0.0001).
- Subjects in the HairMax LaserComb group also had significantly better subjective assessment of overall hair regrowth than subject in the placebo group (p=0.010).
- The HairMax was well tolerated with no subject experienced a serious adverse event and the adverse event profiles were similar between the two treatment groups.
Meta Analysis – Four Clinical Studies of Males and Females
Individual study results were all statistically significant and least squares mean differences ranged from 12.9 to 17.3 at week 16 and from 11.3 to 17.2 at week 26. Homogeneity assessment results were non-significant for both week 16 (p=0.8070) and week 26 (p=0.6188), thus supporting the constancy of a treatment effect across the studies at both time points. Meta analysis overall results were highly statistically significant (p<0.0001) at both week 16 and week 26 with least squares mean differences at 14.01 and 15.27 at week 16 and week 26, respectively.
Qualified subjects had global images recorded at each visit using a stereotactic device. The global images above correspond with the un retouched Macro images below.
Male – Before and After
Female – Before and After
Non-Vellus Hair Density Macro Images
At baseline, a circle approximately 1 inch in diameter, positioned in the transition zone of the scalp, was identified as the site for hair clipping and tattooing. Within this site was the target area for the hair density evaluation. Subjects were evaluated at baseline, week 8, week 16 and week 26 Digital images captured by FUJI S2 were taken of the target site within the clipped area following the site preparation. A 21 inch monitor was used for blinded evaluation.
The studies were designed to support the 510K submission to the FDA and was subjected to an IRB approval and complied in accordance with GCP (Good Clinical Practices). The objectives of the study in males were to assess the following:
- promotion of hair growth through changes in hair count
- cessation of hair loss
- scalp overall health
These four studies were designed as a multi-center, randomized, sham-device controlled trial conducted at eight sites in the United States. Subjects were to use the device three times per week on non-consecutive days for a total of 26 weeks. Hair count measurements were performed at baseline immediately prior to randomization and again at 8, 16 and 26 weeks.
Subject Population and Demographics
The study population included males and females between the ages of 25 and 60 years with a diagnosis of androgenetic alopecia who had been experiencing active hair loss with the last 12 months. The inclusion criteria required a Norwood-Hamilton classification or IIa to V for men or Ludwig (Savin) classification of I-4, II-1, II-2, or frontal for women, and Fitzpatrick Skin Type I to IV. All subjects were randomized. A biostatistician calculated the study to be of a proper size to gauge statistically significant results.
After an assessment of the scalp for androgenetic alopecia and exclusion of other dermatological conditions, subjects were randomized with either active or sham devices. Subjects were then photographed for global evaluation, had the target site of the scalp identified and tattooed for baseline density and were given the device without investigation usage instructions per protocol for OTC use. Subjects returned to the clinic at 8 and 16 weeks with a final visit at week 26 for clinical evaluation.
The results of the key clinical study performed with the HairMax LaserComb in 2006 which led to FDA Clearance to market in 2007 was published in the May 2009 Issue of Clinical Drug Investigation. The article entitled, HairMax LaserComb® Phototherapy Device in the Treatment of Male Androgenetic Alopecia* is indexed as Clin Drug Invest 2009: 29 (5): 283-292 in most of the biomedical databases such as MEDLINE, EMBASE/Excerpta Medica, etc.
THE SCIENCE OF HAIR GROWTH