Treatments and supplements · Fractional CO2 laser

Does CO2 laser help hair regrowth?

What we can tell you today: how thoroughly this has been studied.

Studied in controlled trials

4 studies, of which 1 is a controlled trial in people with a hundred participants or more. No overview combining them yet.

4 Large controlled trial 1 study

3 Small study in people 3 studies

This says how thoroughly something has been studied — not whether it works for you. What each study actually found is in the study itself, and in the plain-language write-ups we are adding.

Appears under: Hair and nails

The studies

4 Large controlled trial Fractional CO 2 Laser and Minoxidil in the Treatment of Alopecia Areata, A Comparative Study.
2025 · Lasers in surgery and medicine · 150 participants
3 Small study in people Therapeutic efficacy and safety of a 1927-nm fractionated thulium laser on pattern hair loss: an evaluator-blinded, split-scalp study.
2018 · Lasers in medical science
3 Small study in people A Novel Treatment of Acne Keloidalis Nuchae by Long-Pulsed Alexandrite Laser.
2018 · Dermatologic surgery : official publication for America
3 Small study in people The removal of unwanted hair using a ruby laser.
1999 · British journal of plastic surgery · 116 participants