research Ultrastructure study of hair damage after ultraviolet irradiation
UV treatment can damage hair, so protection is advised.
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30-60 / 1000+ resultsresearch Measuring oxidative damage to human hair from solar radiation and pollution: A critical review
This critical review examines the oxidative damage to human hair caused by solar radiation and pollution, highlighting that protein and lipid oxidation lead to structural breakdown. The study finds that UVB radiation primarily affects the hair cuticle, while UVA and visible light impact the cortex, with light-colored and bleached hair suffering the most damage. The review emphasizes that solar radiation is the primary damaging factor, but trace metals, air-borne pollution, and hair care practices also contribute to hair degradation. Strategies for hair protection should consider the specific combination of hair characteristics and environmental exposures, referred to as the "hair exposome."
research Merkel cell carcinoma: updates in tumor biology, emerging therapies, and preclinical models
New therapies and trials are needed for Merkel cell carcinoma, a tough skin cancer.
research Lgr6+ stem cells and their progeny in mouse epidermis under regimens of exogenous skin carcinogenesis, and their absence in ensuing skin tumors
UV exposure reduces Lgr6+ stem cells in mouse skin and they don't significantly contribute to skin cancer development.
research Data for the article "Increased calcidiol level in redhaired people: Could redheadedness be an adaptation to temperate climate?"
Redheaded people have higher levels of vitamin D precursor, suggesting their hair color may be an adaptation to low sunlight areas.
research Appearance and Internal Aging
Looking older on the outside might be linked to aging faster on the inside and can be affected by lifestyle choices and health risks.
research Comparison of MMP1 gene expression and collagen percentage in response to polydioxanone, poly-L-lactic acid and polycaprolactone thread implantation in ageing rat skin
PDO, PLLA, and PCL threads increase collagen in ageing skin but don't change MMP1 gene expression.
research Modeling of solar UV-induced photodamage on the hair follicles in human skin organoids
Sunlight exposure damages hair follicles, but certain stem cell-derived particles can reduce this damage and help with hair regeneration.
research Comparative Study of the Effect of UV- VS. Gamma Radiation on Human Hair
Hair fluorescence intensity can measure radiation exposure effectively.
research Oral Centella asiatica Extract Attenuates UVB-Induced Skin Photoaging via Antioxidant, Anti-Inflammatory, and Extracellular Matrix-Preserving Effects in Hairless Mice
Centella asiatica extract taken orally can reduce skin aging from UVB exposure.
research Human hair follicle mesenchymal stem cell-derived exosome attenuates UVB-induced photoaging via the miR-125b-5p/TGF-β1/Smad axis
Exosomes from hair stem cells can reduce skin aging from UVB exposure.
research 3D Modelling for Solar Erythemal UV Protection Provided by Human Hair
Human hair provides more UV protection when aligned and at higher angles, but the scalp still gets UV exposure.
research Quantitative Analysis of Hair Luster in a Novel Ultraviolet-Irradiated Mouse Model
UV exposure reduced hair shine in mice, but minoxidil helped restore it.
research Flexural Agminated Eruptive Nevi in Langerhans Cell Histiocytosis
Sunlight exposure improved a patient's skin condition, and there may be a link between a certain disease and skin growths; a leukemia treatment caused changes in hair color and growth.
research UV damage of the hair.
Excessive sun exposure damages hair, causing protein loss and color changes.
research Critical Role of ATP-P2X7 Axis in UV-Induced Melanogenesis
ATP increases melanin production in skin after UV exposure, with the P2X7 receptor being crucial for this process.
research 1272 p21Waf1/Cip1 is differentially expressed in epidermal versus follicular melanocytes and melanoma cells and is phenotypically regulated by UVB-mediated apoptosis
The protein p21 is more abundant in normal skin cells than in melanoma cells and may help protect against melanoma, with UVB light affecting its levels.
research 780 Novel mechanism of UVB-mediated pigmentation through the axis of ATP-P2X7
Scientists discovered a new way UVB light increases skin pigmentation through the ATP-P2X7 pathway.
research Telogen Alopecia From UV Rays
UV rays can cause a type of hair loss known as telogen alopecia.
research Heterogeneity of Polymorphous Light Eruption: A Study of 105 Patients
The study found that polymorphous light eruption varies among patients and can be distinguished from benign summer light eruption by the time it takes for symptoms to appear after sun exposure.
research Comparison Treatment of Vitiligo by Co-culture of Melanocytes Derived from Hair Follicle with Adipose-Derived Stem Cells with and without NB-UVB
Treating vitiligo with stem cells and melanocytes from hair, along with UVB light, works better than without the light.
research Optical Behavior of Human Skin Substitutes: Absorbance in the 200–400 nm UV Range
UGRSKIN absorbs UV like native skin after 21-28 days, making it potentially suitable for clinical use.
research All sites but skin cancer incidences analyzed worldwide by sex, age, and skin type over time (1955-2007), advancing age, and UVB dose reveals important carcinogenic drivers
Cancer rates are increasing in developed countries, with estrogen, aging, low vitamin D3, and HPV infection as common causes.
research Targeted Overexpression of the Angiogenesis Inhibitor Thrombospondin-1 in the Epidermis of Transgenic Mice Prevents Ultraviolet-B-Induced Angiogenesis and Cutaneous Photo-Damage
Overexpressing thrombospondin-1 in mice skin prevents UVB-induced skin damage.
research A Definitive Role of Ornithine Decarboxylase in Photocarcinogenesis
Inhibiting ODC can prevent UV-induced skin cancer.
research Profiling the Response of Human Hair Follicles to Ultraviolet Radiation
UVB radiation harms hair growth and health, causing cell death and other changes in human hair follicles.
research Cosmeceutical Therapy: Engaging the Repercussions of UVR Photoaging on the Skin’s Circadian Rhythm
Natural skincare products may help reduce sun damage and support the skin's daily cycle.
research Photoprotective and immunoregulatory capacity of ginsenoside Rg1 in chronic ultraviolet B-irradiated BALB/c mouse skin
Ginsenoside Rg1 protects mouse skin from UVB damage and helps control inflammation.
research Restoration of Hair Luster via Novel Biomarker COL7A1 by Minoxidil, Caffeine, and Biotin
Minoxidil, caffeine, and biotin can improve hair shine by restoring certain genes.
research 520 The protective effects of Apocynin against ultraviolet B-induced cellular senescence in human keratinocytes
Apocynin may protect skin cells from aging and damage caused by UVB light.