Lasercombs for Female Pattern Hair Loss: What the 2014 Trials Measured

If a laser hair device is on your shopping list, take the study behind its claims to your dermatologist. You may be hoping to see less scalp in your part, but want to understand what the research actually measured before committing money and time.

Who and what were studied?

Two randomized, double-blind female trials compared nine- or twelve-beam lasercombs with sham devices for 26 weeks. Of 141 women randomized, 122 had a follow-up evaluation and entered the efficacy analysis; 19 were lost to follow-up.¹

Ask whether the device you are considering is the one studied. Bring the exact model and the research link, rather than relying on a product-category name.

What did the hair counts show?

In the measured scalp area, average terminal-hair density rose by 20.2 hairs/cm² with the nine-beam device versus 2.8 with sham, and 20.6 versus 3.0 in the twelve-beam trial. Both differences were statistically significant.¹

Ask your dermatologist what an appropriate outcome would look like in your case and how you would record it. Discuss the practical cost and use instructions alongside that proposed outcome.

Did participants report fuller hair?

Self-reported improvement in hair-loss condition and thickness/fullness reached statistical significance in the nine-beam female trial, but not the twelve-beam trial. The study’s measured density result and participants’ assessments were not identical findings.¹

Tell the dermatologist which change matters to you. Ask how that concern would be reviewed if you and the clinician decide to try a device.

Where are the limits?

The study excluded several other scalp or hair-loss conditions and pregnancy. Participants had Fitzpatrick skin types I–IV; the female groups were mostly White. Follow-up ended at 26 weeks, so this report does not establish long-term maintenance or results for every hair-loss diagnosis.¹

The manufacturer partly funded the study and supplied devices and imaging equipment. Some authors disclosed manufacturer fees or study funding.¹

Have the dermatologist explain how the evidence applies to your diagnosis and the model being offered. Ask for the review date, what would justify continuing and whom to contact about problems. Keep that discussion with your existing treatment instructions before making changes.

Hair, Everywhere includes a monthly Hair Log and visit script. Use them to organize questions and agreed observations alongside your dermatologist’s assessment.