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Immune cells called Treg cells are essential for hair growth and regeneration.

In this study, hair follicle stem cell-derived exosomes enriched with miR-181a-5p accelerated hair regrowth and the transition from telogen to anagen in mice, with up to 90% hair coverage observed, suggesting enhanced activation of the Wnt/β-catenin pathway compared to controls.

The study found that safflower extract may help protect human follicle dermal papilla cells from cisplatin-induced damage, suggesting its potential as an adjuvant in chemotherapy to mitigate hair follicle cell damage.

This study identified ISX9 as a novel agonist of the Wnt/β‐catenin pathway, which promoted hair regrowth in mice and may offer a therapeutic approach for alopecia.

This study found that MPZL3 plays a crucial role in regulating the hair cycle clock in mice, with its absence leading to accelerated hair follicle cycling and suggesting potential therapeutic pathways for alopecia treatment.

Wound healing is a complex process involving different cells and stages, leading to scar tissue formation and strength increase over time.

This study reported that apremilast treatment did not lead to sustained improvement in SALT scores for most patients with extensive and treatment-resistant alopecia areata.

This study suggests that the down-regulation of 14-3-3 proteins in wild-type keratinocytes, absent in Smad4 mutant keratinocytes, might contribute to the failure of hair follicles to initiate catagen in Smad4 knockout mice.

In this study, researchers used two dermal papilla spheroid models to investigate hair cycle regression mechanisms and found that the vascular system enhances tissue physiology and gene modulation, while Retinol-based treatments can partially recover tissue degeneration observed over an extended culture period.

This study found that boehmite accelerates hair regrowth by promoting human dermal papilla cell proliferation and enhancing signaling pathways involved in the hair follicle cycle.

In this study, EREG promoted hair growth by activating specific receptors in cell and animal models, indicating it may be a potential treatment for hair loss.

This study found that overexpression of ovine β-catenin in transgenic mice increased hair follicle density by promoting the transition from catagen to anagen.

This study found that a topical hedgehog agonist can stimulate hair growth by promoting the transition from the resting to growth phase of the hair cycle in adult mouse skin.

This study found that induced TERT expression in mouse skin epithelium rapidly transitions hair growth from the resting to active phase by promoting stem cell proliferation through a non-telomere related mechanism.

This study explored hair follicle gene expression in Inner Mongolia Cashmere goats and identified potential regulators of the transition between growth phases, including IL17RB and ZNF genes.

This study found that microneedles co-delivering minoxidil and a nitric oxide donor effectively promoted hair growth and follicle transition to the growth phase in an alopecia mouse model, suggesting a promising new approach for androgenetic alopecia treatment.

This study found that Wnt5a suppresses β-catenin signaling, inhibiting the transition of hair follicles from the telogen to anagen phase.

This study found that incorporating steroid hormones into DPPC liposomes altered their physicochemical properties, including size, zeta potential, and phase transition temperatures.

In this study, injectable microdepots containing rapamycin and poly(lactic-co-glycolic acid) were developed and demonstrated to effectively promote hair regrowth in mice by sustaining drug release and inducing anagen phase transition in hair follicles through modulating autophagy and the Wnt/β-catenin pathway.

In this animal study, rosehip seed oil applied to the skin of mice promoted hair regrowth by accelerating hair follicles' transition from resting to growth phases and increased hair follicle density, bulb size, and skin thickness, suggesting potential as a treatment for hair loss.

This review article discusses studies showing that extracellular nucleic acids play a role in tissue regeneration by triggering sterile inflammation through endosomal toll-like receptor activation, but notes that the regulatory transition from inflammation to proliferation phases remains incompletely understood.

In this review, researchers explored thermo-responsive polymers and their applications in nanomedicine, highlighting their role in targeted drug delivery, gene therapy, and imaging, enabled by their temperature-sensitive phase transitions to ensure localized therapeutic action and minimize damage to healthy tissues.

This article compares traditional nonlaser hair removal methods with newly developed laser-assisted techniques, discussing their applications but not presenting new research findings.

This study identified a novel phase of stem cell quiescence, GAlert, in mice, regulated by mTORC1, that primes stem cells for injury response.

This study developed a spring-driven microneedle booster that improved early and cumulative delivery of minoxidil, accelerating hair regrowth compared to traditional roller methods in an androgenetic alopecia model.

This study reveals that human hair follicles transition between active and dormant states stochastically, challenging the idea of a cyclical automaton controlling hair growth.

Telogen Effluvium causes more hair loss because hair moves to the resting phase too soon.

This study examined hair follicles from 14 Caucasian males and found that catagen-phase follicles were more prevalent (7.5%) than previously reported, challenging the established view that telogen-phase follicles are more common.

In this study, a single subcutaneous dose of PTH-CBD showed similar hair regrowth to daily oral ruxolitinib in mice with alopecia, possibly through increased beta-catenin and anagen transition stimulation.

This study found that low-level laser treatment may promote hair regrowth in mice by activating the Wnt10b/ß-catenin pathway and inducing the anagen phase of hair follicles.