A Clinical Observation of 1565nm Non-ablative Fractional Laser in the Treatment of Androgenic Alopecia
Status:
Recruiting
Trial end date:
2023-12-31
Target enrollment:
Participant gender:
Summary
1. Androgenic alopecia (AGA) is a clinically common non cicatricial, progressive hair
follicle microminiaturization disorder that begins in puberty or after puberty. The
latest epidemiological survey shows that the prevalence rate of males in China is about
21.3%. In 2021, Nature published an article stating that stress hormones can inhibit
hair growth by regulating hair follicle stem cells. This research conclusion provides
new evidence for the impact of stress on hair growth. The trend of receiving AGA
patients in the investigators' outpatient department is increasing. How to provide
rapid, safe, and effective treatment for AGA patients is currently a hot topic for
clinicians.
2. Studies have shown that phototherapy can effectively improve androgenic alopecia,
alopecia areata, and hair loss after chemotherapy, and promote hair growth. At the same
time, phototherapy can also be adjusted by adjusting the expression of reductase genes
and vascular endothelial growth factor genes, as well as some endogenous epidermal
growth factors, such as fibroblast growth factor and insulin-like growth factor, are
also upregulated, which can stimulate hair growth.
3.1565 nm non-ablative fractional laser has the effects of inhibiting sebaceous gland
secretion of oil, regulating collagen metabolism, and delaying changes in scalp collagen
after hair loss. Previous studies have confirmed that 1565 nm non-ablative fractional laser
therapy for alopecia areata has a good effect. Its possible mechanisms include increasing
local blood flow, stimulating growth factors and cytokines during hair growth. At the same
time, in order to achieve low energy, safe, and effective treatment without the need for hair
cutting, the investigators had for the first time improved the 1565 nm non non-ablative
fractional laser treatment tool, removing the original sapphire crystal cooling contact. This
improvement can make the treatment head fully fit the scalp, and the excitation beam acts
vertically on the treatment area, reducing energy attenuation.