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This narrative review explores how psychological stress may contribute to premature skin aging by affecting dermal collagen and elastin remodeling through neuroendocrine, molecular, and cellular pathways, highlighting potential therapeutic targets to preserve skin structure and function.

In this comprehensive review, researchers reported that macromolecules like type I collagen, keratin, and ceramides enhance hair health by improving follicular function and increasing hair density, strength, shine, and resilience, as shown in various in vitro, animal, and human studies.

This review highlights current evidence showing that hormonal changes significantly influence skin aging, with estrogen decline during menopause having a major impact on women's skin health, while testosterone decreases contribute to aging in men.

This systematic review found that exosome-based therapies significantly improve skin elasticity, reduce wrinkle depth, enhance hydration, and modulate pigmentation, with minimal adverse events reported across multiple studies. However, further clinical trials are necessary to confirm long-term efficacy and safety.

This review explores the potential of mesenchymal stem cells in skin regeneration and rejuvenation, highlighting their ability to modulate immune response and enhance extracellular matrix strength but does not provide new clinical evidence.

This study reports that autologous micrografting may effectively treat stretch marks by promoting extracellular matrix remodeling and enhancing fibroblast activity, potentially expanding therapeutic options for this condition.

Changes in hair follicle structure may help diagnose and monitor alopecia.

In this study, UVB irradiation increased mast cell degranulation only when skin was innervated, suggesting that the interaction between mast cells and nerve fibres may exacerbate solar elastosis by promoting dysfunctional dermal elastic fiber accumulation, but further research is needed for confirmation.

This study identified key proteins, FKBP10 and FBN2, that promote the growth cycle of secondary hair follicles in cashmere goats, with higher expression in the anagen phase, offering insights into mechanisms potentially enhancing cashmere yield and quality.

This study highlights the distinct distribution patterns of extracellular matrix components in the scalp skin of male and female androgenetic alopecia patients, with increased elastin staining intensity observed in male cases.

This study examined the association between aging and androgenetic alopecia, suggesting a strong interplay among chronic inflammation, metabolic dysregulation, and increased oxidative stress as contributing factors.

This study explored the use of microneedling for dermatological disorders, highlighting its benefits like increased collagen and elastin production, dermal thickening, and skin rejuvenation, making it suitable for conditions such as scars, stretch marks, and photoaged skin.

This review examined and discussed the role of dermis-derived factors in the regulation of melanogenesis, noting their significance in both normal and abnormal mammalian skin conditions, suggesting an underexplored area of study compared to dermal and epidermal influences.

This review highlights the use of microneedling devices and patches to deliver cosmetic agents through the skin, noting their applications in skin rejuvenation and safety considerations such as potential skin irritation and infection.

This article reviews the use of polydioxanone (PDO) threads for facial rejuvenation and reports no new clinical findings, highlighting their safety and potential for natural, durable results.

This article reviews how biopolymers are utilized in cosmetics, highlighting their biodegradable and non-toxic properties, recent structural developments, novel applications, and safety considerations in the formulation of skin, hair, and oral care products.

HA-iMSC-EVs can improve skin aging by boosting cell growth and restoring collagen and elastin.

This study suggests that microneedling may be an effective and less painful treatment for vitiligo, offering benefits over traditional needle injections, particularly in challenging-to-treat areas like the extremities or stubborn regions.

This integrative literature analysis found that radiofrequency is widely used in dermatocosmetology for facial skin rejuvenation due to its high efficiency and safety, but noted a lack of comprehensive studies on radiofrequency microneedling, which may enhance safety and efficacy over traditional methods.

This review compiles existing information on the pathogenesis of androgenetic alopecia, highlighting its genetic, hormonal, and environmental factors, but reports no new clinical findings.

This study found that DPP4 is significantly involved in matrix deposition and fibrosis in human skin fibroblasts, although the exact functions of DPP4 remain unclear.

Skin aging helps us understand overall aging.

This study found that Anigozanthos Flavidus flower extract may improve skin elasticity and reduce wrinkles by increasing essential extracellular matrix proteins in both in vitro and in vivo settings.

Cosmetic procedures can improve skin appearance and boost confidence.

This study found that the wild-derived mouse strain Mus pahari has fragile skin that separates at subdermal levels under moderate force, potentially due to altered extracellular matrix development.

This study found that full thickness wounds in Lanyu pigs led to altered molecular expression and abnormal skin structure, without regenerating key epithelial cells thought to aid in skin regeneration.

This study found that Pomiferin demonstrated potent stimulation of extracellular matrix proteins in human dermal fibroblasts and hair follicles, suggesting its potential as an ingredient in skin and scalp treatments.

Dermatologists give better information on pathology forms, hypersensitivity vasculitis is a common skin issue, misdiagnoses can occur, and various skin conditions are linked to loss of elastin or genetic factors.

This study found that soaking raw skin in a saturated lime solution led to widespread cellular dissolution and tissue changes that facilitate dehairing after 4 to 7 days at -18°C.

This review derived guidelines for scalp surgery suggesting improved outcomes when avoiding neurovascular structures, preserving tissue integrity, and maintaining hair direction, but it reports no new clinical results.