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This review discusses the physiology of hair follicles, their disorders, and the principles behind developing treatments, reporting no new results.

In this study of men with androgenetic alopecia, daily finasteride 1 mg alongside hair transplant improved scalp hair density and growth of nontransplanted hair compared to placebo over 48 weeks.

In this study, microneedles combined with finasteride nanostructured lipid carriers (FIN-NLC-MNs) were found to enhance skin penetration and specifically target hair follicles, promoting hair growth and gene regulation in androgenetic alopecia.

This study found that combining microneedle treatments with 5% minoxidil topical solution led to the greatest increase in hair density among Chinese men with androgenetic alopecia.

In this study, researchers reported that chronic UV exposure may contribute to androgenic alopecia progression by influencing hair cycle changes and exacerbating solar elastosis in the scalp.

This study found that combining ablative fractional CO₂ laser therapy with hair growth factors significantly increased hair density in men with androgenetic alopecia compared to using growth factors alone.

In this systematic review, tSVF-based therapy demonstrated favorable outcomes for various pathologies, including aged skin and osteoarthritis, with low incidence of adverse events, while highlighting the need for further research into optimal protocols and mechanisms of action.

This review suggests that PRP injections may be effective in promoting hair regrowth, reducing hair loss, and increasing hair thickness in patients with androgenic alopecia.

This study found that transplanted microencapsulated dermal papilla cells in rat footpads can regenerate hair follicles and sebaceous gland structures, suggesting a potential substitute for fresh dermal papillae cells.

This study found that microneedling improved hair density and thickness with minimal side effects in patients with androgenetic alopecia and telogen effluvium.

This study found that platelet lysate produced higher follicular regeneration in hair restoration surgeries compared to activated PRP and saline, with significant gains in both follicular unit and hair density.

This study found that finasteride 1 mg daily, taken before and after hair transplant surgery, significantly improved scalp hair coverage and density in men with androgenetic alopecia compared to placebo.

This study found that the Epilight multiple wavelength pulsed-intense light source was effective for long-lasting hair removal, particularly in individuals with dark hair and light skin.

This study utilized magnetic resonance imaging to noninvasively visualize and differentiate skin structures in rat skin, finding a significant correlation between MRI data and histological areas.

This study found that combining micro-needling, low-level laser therapy, and autologous non-activated platelet-rich plasma increased hair density in patients with androgenic alopecia over the treatment period.

This study found that in women with androgenetic alopecia, hair density is lower, and thin and non-growing hair are more common on the midscalp compared to the occiput.

This study found that 5% primed conditioned medium from human umbilical cord blood-derived mesenchymal stromal cells significantly improved hair density, thickness, and growth rate in patients with androgenetic alopecia.

This study found that transplanting GFP transgenic tail skin onto wild-type mice leads to partial replacement of dermis, nerves, and blood vessels by recipient tissue after six months, while epidermis, hair follicles, and sebaceous glands persist from the graft.

This study found that non-thermal plasma treatment increased epidermal thickness and dermal collagen density in mouse skin tissue without causing damage, potentially promoting growth factors and tissue remodeling.

This review discusses the effectiveness of non-thermal, non-ablative devices like light-emitting diodes in treating various skin and hair conditions but reports no new clinical findings.

This study found that adding low-dose dutasteride to ongoing finasteride treatment significantly improved hair density in a patient with androgenetic alopecia.

This article provides a guide for surgeons on repairing poorly executed hair transplants, emphasizing meticulous techniques and optimal use of limited hair supply to achieve cosmetic improvements.

This study found that a serum-free DMEM-F12 medium with 45% oxygen best supports in vitro development and differentiation of human fetal skin, closely mimicking the in vivo state.

In a porcine model, this study observed that using an External Tissue Expansion Device increased epidermis thickness, cell proliferation, and vessel density at fat graft recipient sites.

In this study, the researchers found that the effectiveness of a 1,550-nm fractional laser in promoting hair growth in mice depends on the specific combination of beam energy and density, with inappropriate settings potentially causing ulcers or hair follicle injury.

This study found that asebic mice exhibit abnormal sebaceous gland differentiation and insufficient sebum production due to defective regulation of cell processes, despite possessing normally developing sebaceous glands initially.

This study found that 1,540 nm fractional erbium-glass laser treatment combined with topical minoxidil significantly increased hair regrowth in alopecia areata patches compared to minoxidil alone, with response rates of 60% versus 16%, though the long-term effects remain unknown.

This study found that "micro skin tissue columns" improved wound healing by enhancing re-epithelialization, collagen deposition, dermal remodeling, and reducing inflammation without causing long-term donor site morbidity.

This review discusses the classification and diagnosis of primary scalp alopecia, focusing on scarring and non-scarring types, and reports no new clinical results; it emphasizes simplified diagnostic pathways and tissue processing techniques.

This study describes permanent scalp alopecia in patients receiving chemotherapy, radiation, or both, and highlights the need for further research to identify causative factors and mitigation strategies.