Fractional Erbium:YAG (or Er:YAG) lasers can result in scalp hair progress per quite a few current research. Both ablative and non-ablative Erbium lasers have been used to deal with hair loss.

Note that the fractional lasers mentioned on this submit have considerably greater wavelengths (1,500-3,000 nm) than typical low-level laser remedy (LLLT) home-use units (650 nm). Fractional laser remedies should be undertaken at skilled clinics and by no means at house.

Fractional laser remedies are distinctive in that they work at each the higher epidermal and decrease dermal layers of the pores and skin. Other laser mild remedies are both ablative or non-ablative.

Here is a few data on ablative versus non-ablative lasers and on fractional lasers. Also see this excellent overview from 2012 of all four combinations of lasers being implied right here. Note that fractional carbon dioxide (CO2) lasers have additionally been used for hair progress functions.

Update: January 21, 2024

Non-Ablative Fractional Laser Superior to five% Minoxidil

A brand new examine from China (h/t “Kyle”) simply discovered {that a} 1565 nm non-ablative fractional laser (NAFL) displays superior hair growth compared to topical minoxidil 5%. The higher outcomes have been seen in: whole hair depend; whole hair density; terminal hair depend; terminal hair density; variety of follicle items; and common hair numbers per hair follicle unit. Quite convincing.

The examine consisted of 30 male members with androgenetic alopecia (AGA). No vital uncomfortable side effects have been observed. Below is likely one of the earlier than (baseline) and after (week 10) pictures. While the hair regrowth is just not simply evident within the scalp picture, the precise examine has an in depth desk with information breakout.

1565 nm non-ablative fractional laser hair progress, earlier than and after (10 weeks) pictures. Source: Journal of Cosmetic Dermatology.

Update: April 14, 2022

Er:YAG Lasers for Hair Growth

Various new research have been printed since I initially wrote this submit. All appear to make use of the Erbium lasers for hair progress.

— Ablative fractional 2940-nm erbium:YAG laser to deal with hair loss in a male Korean affected person. They used the regionally made PURAXEL laser. The earlier than and after picture from this September 2021 examine is proven beneath:

Fractional Laser Hair Growth
Fractional Erbium:YAG Laser Hair Growth. Before an After.

— A examine from August 2021 concluded {that a} non-ablative 2940-nm Er:YAG laser is an effective tool within the remedy of androgenetic alopecia. The authors made use of the Fotona’s SP Dynamis laser system in SMOOTH ™ mode.

Erbium Laser and PRP Hair Loss
Erbium Laser and PRP mixture hair loss remedy.

— A novel 2021 study from Russia discovered that mixture remedy consisting of non-ablative 2940-nm Er:YAG laser plus platelet-rich plasma injections resulted in very vital hair regrowth.

The SP Dynamis (Fontona) fractional laser was utilized in SMOOTH™ mode. The earlier than and after picture on the appropriate is spectacular.

May 11, 2015

Fractional Laser Hair Growth Stimulation through Wounding

The purpose I considered lasers once more this week is as a result of a number of days in the past an interesting May 2015 article from South Korea was published within the Lasers in Surgery and Medicine journal.

The conclusion of this text is that ablative fractional lasers seem like efficient in inducing hair regrowth through activation of the Wnt/Beta-Catenin pathway. I’ve mentioned the Wnt/Beta-Catenin pathway in quite a few posts on this weblog earlier than. Note that the way in which these lasers work is considerably associated to the idea of wounding and hair progress.

Apparently, even earlier than this newest improvement, there have already been just a few printed journal articles from Asian researchers overlaying each ablative and non-ablative fractional lasers and their optimistic influence on hair progress. For instance see:

  • April 2015: Enhancing hair follicle regeneration by non-ablative fractional erbium-glass laser: The laser wavelength was 1550 nm. Note that the erbium laser is sort of at all times ablative, however this one was non-ablative.
  • December 2011: The impact of a 1550 nm fractional erbium-glass laser in feminine sample hair loss.
  • January 2011: Fractional photothermolysis laser remedy of male sample hair loss. Also utilizing the 1550 nm erbium-glass laser.

In the newest South Korean examine in mice, it was discovered that the simplest (ablative) laser dosage was “the 10 mJ/spot and 300 spots/cm2 setting”. Hopefully a few of these scientists will quickly conduct research on people.

It does seem to be light amplification by stimulated emission of radiation (LASER) can now legitimately be thought of as a software within the battle in opposition to hair loss. It is probably going that within the years forward, scientists will experiment with many more moderen lasers and with varied period and energy settings.


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