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Research

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research Insertional mutation of the hairless locus on mouse Chromosome 14

19 citations , November 1993 in “Mammalian Genome”

This study reports that transgene insertion in homozygous transgenic mice causes irreversible hair loss and impaired immune function, linked to interruption of the hairless locus on Chromosome 14.

research Association between angiotensin‐converting enzyme gene insertion deletion polymorphism and androgenetic alopecia susceptibility among Egyptian patients: A preliminary case‐controlled study

1 citations , September 2021 in “Journal of Cosmetic Dermatology”

This study found that the ACE gene I/D polymorphism may serve as a genetic susceptibility indicator for androgenetic alopecia in an Egyptian patient group.

research Effect of Needle Geometry on Insertion Force of Different Hair Implanters

January 2021 in “Advanced Biomedical Engineering”

This study found that hair implant needles with longer point lengths and smaller bevel angles required less total work for insertion, which corresponded with surgeons' perceptions of insertion force differences.

research Hydrogels Modulating the Microbiome: Therapies for Tissue Regeneration with Infection Control

8 citations , July 2025 in “Gels”

This review discusses how functionalized hydrogels can modulate the microbiome to aid tissue regeneration and infection control, highlighting their potential to deliver therapeutic agents effectively and support beneficial immune responses.

research Telogen effluvium associated with COVID‐19 infection

44 citations , January 2021 in “Dermatologic Therapy”

This study suggests that COVID-19 infection may trigger telogen effluvium, a condition of hair shedding, though medication side effects and pandemic-related stress cannot be excluded as contributing factors.

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Community Join

5 / 974 results

community Infection from micro needling even with medicated shampoos and sanitation

4 upvotes 1 year ago

The conversation discusses scalp itching and tenderness after microneedling, despite using medicated shampoos and proper sanitation. The user plans to see a dermatologist and is concerned about possible infection or allergic reaction.

community Botox injections into the scalp for the treatment of hair loss.

3 upvotes 3 months ago

Botox injections into the scalp may reduce hair loss by decreasing scalp tension, but results vary; some users experienced no change, while others saw reduced hair loss and regrowth. The treatment is expensive and may not be effective for everyone, with some users reporting pain and no significant benefits.

community 20MTF Results on the crown from 1 year on estrogen injections

468 upvotes 5 months ago

Estrogen injections significantly improved hair growth, particularly on the crown, after stopping finasteride. Monotherapy with estrogen led to hairline improvement, but also caused sterility and potential feminization effects.

community GHK-Cu peptide injections - what is your experience?

13 upvotes 6 months ago

GHK-Cu peptide injections are discussed for hair growth, but users report mixed results and suggest focusing on DHT management first. Some users combine GHK-Cu with treatments like Minoxidil and Dutasteride, but emphasize its benefits for skin rather than hair.

community bpc-157 scalp injections. 3 months

in Progress Pictures 52 upvotes 8 months ago

The user experienced reduced hair shedding after three months of injecting 1mg BPC-157 into the scalp, while continuing to use dutasteride and minoxidil. The injections are painful, and the user sometimes switches to injecting into the buttocks.

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Learn

5 / 801 results

learn Scalp Micropigmentation

Is there a risk of infection with scalp micropigmentation? Scalp micropigmentation has a risk of infection, but proper aftercare minimizes it.

learn Botox

What’s the science behind Botox injections for androgenetic alopecia? Small published studies and a 2025 meta-analysis report hair-count gains from scalp botulinum toxin injections, but nearly all of them lack control groups, and reviewers of the same literature call the evidence low-quality; the treatment is off-label and not approved for hair loss anywhere.

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