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research Induction of the hair growth phase in postnatal mice by localized transient expression of Sonic hedgehog

231 citations , October 1999 in “Journal of Clinical Investigation”

This study found that administering an adenovirus vector to increase Sonic hedgehog gene expression in mouse skin accelerated the transition of hair follicles into the growth phase, promoting hair growth.

research 1391 Cell death functions in hair follicle regeneration

April 2023 in “Journal of Investigative Dermatology”

This study found that blocking apoptosis during the catagen phase in mice disrupts hair follicle stem cell niche architecture, delaying subsequent hair regeneration cycles.

research FGF signaling for hair cycle resting phase alleviates radiation alopecia

1 citations , September 2016 in “Journal of Dermatological Science”

This study found that FGF18 signaling helps protect hair follicles from radiation damage by maintaining the resting phase and supporting stem cell survival, potentially reducing radiation-induced hair loss.

research Analysis of Apoptotic Cell Death in Human Hair Follicles In Vivo andIn Vitro

140 citations , December 1998 in “Journal of Investigative Dermatology”

Apoptosis in hair follicles varies by growth phase, with TGF-β possibly starting the catagen phase.

research 880 Gasdermin A3-mediated cell death causes niche collapse and precocious activation of hair follicle stem cells

2 citations , April 2019 in “Journal of Investigative Dermatology”

This study found that overexpression of Gasdermin A3 in mice disrupts the hair follicle stem cell niche and causes hair loss through cell necrosis and abnormal hair cycle progression, without involving immune-mediated mechanisms.

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community Pelage PP405: New Hair Growth from Inactive Follicular Units - Phase 2a results at AAD 2026

1080 upvotes 6 months ago

PP405, a topical treatment, shows promise for hair growth by activating inactive follicles, with 66% of participants experiencing positive results. The treatment is well-tolerated and may proceed directly to Phase 3 trials, offering a potential alternative to minoxidil and finasteride.

community Peptides that Stop Hair Loss? | In-depth Literature Review Video

76 upvotes 2 years ago

Peptides like TB500, KPV, GHK-CU, and BPC-157 are overhyped for hair growth with limited proven effectiveness in humans. Combining peptides with delivery methods like iontophoresis and sonophoresis shows promise, but many claims remain unproven.

community This shedding phase is brutal man…

590 upvotes 1 year ago

The user is experiencing a difficult shedding phase after starting a hair loss treatment with oral finasteride, topical minoxidil, and microneedling. Despite the shedding, they remain hopeful for regrowth and plan to continue the treatment, encouraged by others' positive results.

community British man dies after falling ill at hair transplant clinic in Turkey

in Transplants 791 upvotes 1 year ago

A British man's death at a Turkish hair transplant clinic raised safety concerns about such clinics. Users discussed risks of cheaper clinics and suggested alternatives like Thailand, Korea, and Colombia.

community Pelage Announces Positive Results of Phase 2a Trials for PP405

303 upvotes 1 year ago

PP405 shows promise in treating severe hair loss, with 31% of users experiencing over 20% hair density increase in four weeks, faster than minoxidil and finasteride. Some users are skeptical about the results' significance and long-term efficacy.

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