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This review discusses the types, causes, and treatments for skin pigmentation disorders, examining clinically tested options including 25 plants, four marine species, and 17 medications.

This review explores the interactions between the skin, peripheral nervous system, and immune system and reports no new results; the authors highlight the importance of understanding these connections for various skin conditions.

This study demonstrated that novel curcumin analogs CMC2.24, CMC2.23, and CMC2.5 were more effective and less toxic than parent curcumin in inhibiting melanin production in normally pigmented human melanocytes, suggesting potential for skin depigmentation therapies.

This review discusses the role of telomere length dynamics in hair follicle biology and reports no new clinical findings, emphasizing the need for further research in humans.

In this study, a combined regimen of an oral supplement with Pinus pinaster, Grape seed extract, vitamins, and minerals, plus high SPF sunscreen, significantly improved mild-to-moderate facial melasma in 30 women over 84 days, reducing pigmentation and enhancing cosmetic appearance with no reported adverse effects.

This review evaluates the potential of natural products from marine microorganisms for cosmetic applications and reports no new experimental results, highlighting challenges and prospects in their use.

In this study, voglibose, commonly used for diabetes management, was found to reduce melanin synthesis and inhibit melanogenic signaling pathways in B16F10 melanoma cells, suggesting it could be repurposed for treating hyperpigmentation disorders with confirmed topical safety in human tests.

This article discusses melatonin's role in mammalian coat color and its potential in melanoma treatment when used with chemotherapy, but reports no new clinical results.

This study introduces the "skinspan" framework to promote skin longevity through sun protection, topical retinoids, and antioxidants as first-line care. It suggests lasers and emerging therapies as additional options but emphasizes the need for more randomized controlled trials to solidify the evidence base.

In this study, Desmodesmus pannonicus water extract demonstrated significant antioxidative properties, inhibited melanin production, promoted wound healing in human keratinocyte cells, and showed potential for hair growth enhancement in human follicle dermal papilla cells, suggesting its promise for future dermatological applications.

This study reviews how individuals with diabetes experience accelerated skin aging and explores the implications for cosmetic treatments, highlighting the need for diabetes-informed dermatologic approaches due to limited evidence on safety and efficacy in this population.

In this study, the researchers found that cholinergic signaling via M4 muscarinic receptors influences hair growth, with enhanced elongation observed upon activation with bethanechol, highlighting its potential role in hair biology using mouse models.

This source explores melatonin's roles beyond circadian rhythm regulation, reporting its benefits in skin conditions like dermatitis, melasma, alopecia, psoriasis, and skin aging due to its antioxidant, anti-inflammatory, and immunomodulatory properties, while highlighting the need for more trials on optimal dosing and long-term safety.

This study examined the factors contributing to gray hair, such as genetics and lifestyle, and found that while graying correlates with some health conditions, it is primarily a physiological process rather than a pathological one.

This review discusses the role of nanocarrier systems, such as nanoemulsions and liposomes, in delivering antioxidants into the skin to counteract oxidative stress, highlighting recent advancements in topical antioxidant therapy through nanotechnology.

This source reviews popular cosmeceutical ingredients for skin care, noting that while they are popular among consumers for anti-aging benefits, many lack robust clinical evidence for their efficacy and safety, as they are not regulated by the FDA.

New treatments and drugs show promise for improving skin pigmentation and regeneration.

In vitro skin models are improving but still need more innovation to fully replicate human skin.

This review discusses recent findings on cellular antioxidant responses to oxidative stress and their implications for treating various human diseases but reports no new clinical results.

This study observed that lower serum copper levels may be linked to premature hair graying in young patients compared to controls.

This review examines the role of autophagy, specifically macrophage, chaperone-mediated, and microphagy, in the progression of six skin diseases, including psoriasis and systemic lupus erythematosus, illustrating its significance in cellular homeostasis.

This review highlights that current in vitro models often fail to replicate the physiological oxygen levels experienced by different skin cell types, which could affect redox states and functions, potentially accelerating skin aging.

This study proposed a model that accurately predicts skin condition using genotype information and machine learning, suggesting potential for creating customized cosmetics.

Combination therapies might work better for some vitiligo patients, but results vary.

Andrographolide from Andrographis paniculata promotes hair growth and could be a natural treatment for hair loss.

This review summarizes the role of non-coding RNAs in hair follicle regeneration and highlights potential therapeutic strategies, though it reports no new experimental results.

This narrative review explored how blue light therapy may offer therapeutic benefits for various skin disorders by affecting microbial activity and immune responses, promoting hair growth, and aiding skin rejuvenation and healing.

This article reviews the empirical use of algae in traditional remedies and highlights the need for scientific understanding of algae's bioactive compounds used in cosmetics without providing new experimental results.