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Did you mean Ultraviolet A damage?

GlossaryUltraviolet A damage

harm from deep-penetrating UVA rays causing skin aging and cancer

Ultraviolet A (UVA) damage refers to the harm caused by UVA radiation, a type of ultraviolet light from the sun that penetrates deep into the skin. This damage can lead to premature aging, DNA mutations, and an increased risk of skin cancer. UVA rays are less intense than UVB rays but are more prevalent and can penetrate through clouds and glass, making them a significant concern for long-term skin health.

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research Impact of ultraviolet radiation‐induced damage to hair fiber integrity: A multi‐technique physicochemical characterization of surface and cortex properties

May 2026 in “International Journal of Cosmetic Science”

UV radiation damages hair similar to bleaching, but double bleaching causes more severe protein degradation.

research Protein Kinase C Epsilon Signals Ultraviolet Light‐induced Cutaneous Damage and Development of Squamous Cell Carcinoma Possibly Through Induction of Specific Cytokines in a Paracrine Mechanism^¶

3 citations , January 2005 in “Photochemistry and Photobiology”

Protein kinase C epsilon may promote skin cancer development after UV exposure by affecting nearby cells.

research Key locations of oxidative damage in human hair keratins after heat and ultraviolet light exposure

September 2025 in “International Journal of Cosmetic Science”

Heat and UV exposure damage hair structure by altering keratins.

research Targeted Overexpression of the Angiogenesis Inhibitor Thrombospondin-1 in the Epidermis of Transgenic Mice Prevents Ultraviolet-B-Induced Angiogenesis and Cutaneous Photo-Damage

93 citations , May 2002 in “Journal of Investigative Dermatology”

Overexpressing thrombospondin-1 in mice skin prevents UVB-induced skin damage.

research Photoprotective Effects of Caffeic Acid against Ultraviolet-induced Damages on Human Follicle Dermal Papilla Cells

2 citations , March 2017 in “Asian Journal of Beauty and Cosmetology”

Caffeic acid protects human scalp cells from UV damage.

research Effects of ultraviolet rays and particulate matter on hair porosity in damaged hair

3 citations , June 2024 in “Journal of Cosmetic Dermatology”

UV rays and pollution increase hair damage.

research Ultrastructure study of hair damage after ultraviolet irradiation

2 citations , December 2013 in “Journal of Cosmetic Dermatology”

UV treatment can damage hair, so protection is advised.

research Protective effect of a novel metal-phenolic network composite against ultraviolet-induced skin damage by modulating MAPK/AP-1/NF-κB signaling pathways and attenuating oxidative stress in human keratinocytes

December 2025 in “Biomedicine & Pharmacotherapy”

Melamax® protects skin from UV damage and reduces inflammation and oxidative stress.

Protection and Restoration of Damaged Hair via a Polyphenol Complex by Promoting Mechanical Strength, Antistatic, and Ultraviolet Protection Properties

research Protection and Restoration of Damaged Hair via a Polyphenol Complex by Promoting Mechanical Strength, Antistatic, and Ultraviolet Protection Properties

1 citations , July 2023 in “Biomimetics”

A new hair treatment using a natural polyphenol complex improves hair strength, reduces static, and protects against UV damage.

research Protein Kinase C Epsilon Signals Ultraviolet Light-induced Cutaneous Damage and Development of Squamous Cell Carcinoma Possibly Through Induction of Specific Cytokines in a Paracrine Mechanism¶

28 citations , January 2005 in “Photochemistry and Photobiology”

Protein kinase C epsilon may increase skin cancer risk by affecting nearby cells.

research 287 Mackerel fermented fish oil suppresses human keratinocyte damage caused by ultraviolet B radiation

September 2017 in “Journal of Investigative Dermatology”

Mackerel fermented fish oil protects skin cells from damage by UVB light.

The Ethnic Differences in Hair Damage and Integral Hair Lipid After Ultraviolet Radiation

research The Ethnic Differences of the Damage of Hair and Integral Hair Lipid after Ultra Violet Radiation

59 citations , January 2013 in “Annals of Dermatology”

Asian hair is more resistant to UV damage due to higher lipid content.

research Protection of hair from damage induced by ultraviolet irradiation using tea (Camellia sinensis) extracts

13 citations , August 2021 in “Journal of Cosmetic Dermatology”

Tea extracts can protect hair from UV damage.

research Effect of Ultraviolet Radiation, Smoking and Nutrition on Hair

19 citations , January 2015 in “Current problems in dermatology”

Ultraviolet rays damage hair, smoking may cause hair loss, and good nutrition is important for hair health, but genetics mainly decide hair thickness.

Transepidermal UV Radiation of Scalp Skin Ex Vivo Induces Hair Follicle Damage That Is Alleviated by Topical Treatment with Caffeine

research Transepidermal UV radiation of scalp skin ex vivo induces hair follicle damage that is alleviated by the topical treatment with caffeine

31 citations , February 2019 in “International Journal of Cosmetic Science”

Caffeine applied to the scalp can protect hair follicles from UV damage.

research 520 The protective effects of Apocynin against ultraviolet B-induced cellular senescence in human keratinocytes

November 2022 in “Journal of Investigative Dermatology”

Apocynin may protect skin cells from aging and damage caused by UVB light.

research 583 Induction of type 17 collagen decreases ultraviolet b-induced cellular senescence in human htert/ker-ct keratinocytes

July 2022 in “The journal of investigative dermatology/Journal of investigative dermatology”

Increasing type 17 collagen reduces aging signs in skin cells caused by UV light.

research Androgenic Alopecia and Stress-Induced Premature Senescence by Cumulative Ultraviolet Light Exposure

27 citations , January 2002 in “Exogenous Dermatology”

Chronic exposure to sunlight may worsen male pattern baldness and protecting the scalp from the sun could slow it down.

Review of the Current Understanding of the Effect of Ultraviolet and Visible Radiation on Hair Structure and Options for Photoprotection

research Review of the current understanding of the effect of ultraviolet and visible radiation on hair structure and options for photoprotection

22 citations , July 2004 in “International Journal of Cosmetic Science”

UV radiation and visible light can damage hair, but there are ways to protect it.

Ultraviolet Light-Induced Leukoderma of the Scalp Associated with Androgenetic Alopecia: Senescent Actinic Depigmentation of the Scalp

research Ultraviolet Light-Induced Leukoderma of the Scalp Associated with Androgenetic Alopecia: Senescent Actinic Depigmentation of the Scalp

9 citations , September 2009 in “Journal of Cutaneous Medicine and Surgery”

UV light causes skin color loss in bald areas; wear a cap and use sunscreen.

research Photoprotective and immunoregulatory capacity of ginsenoside Rg1 in chronic ultraviolet B-irradiated BALB/c mouse skin

6 citations , July 2013 in “Experimental and Therapeutic Medicine”

Ginsenoside Rg1 protects mouse skin from UVB damage and helps control inflammation.

research Investigation of hair dye deposition, hair color loss, and hair damage during multiple oxidative dyeing and shampooing cycles.

4 citations , August 2016 in “PubMed”

Repeated dyeing and shampooing cause hair color loss and damage.

research Efeito da radiação ultravioleta na cor, na perda proteica e nas propriedades mecanicas do cabelo

1 citations , February 2003

UV radiation causes significant protein loss and color changes in hair, especially blond hair.

research Editor's evaluation: Role of distinct fibroblast lineages and immune cells in dermal repair following UV radiation-induced tissue damage

June 2021

Different types of sun exposure damage skin cells and immune cells, with chronic exposure leading to more severe and lasting damage.

Transepidermal UV Radiation of Human Scalp Skin Induces Distinctive Hair Follicle Damage, Mitigated by Topical Caffeine Treatment

research 910 Transepidermal UV radiation of human scalp skin induces distinctive hair follicle damage, which is mitigated by topical caffeine treatment

April 2019 in “Journal of Investigative Dermatology”

Caffeine can protect scalp hair follicles from damage caused by UV radiation.

research 3P343 Change of cell membrane complex of a hair fiber caused by hair damage

January 2005 in “Seibutsu Butsuri/Seibutsu butsuri”

Chemical treatments damage hair more than UV exposure, making it thinner and less flexible.

research Profiling the Response of Human Hair Follicles to Ultraviolet Radiation

53 citations , January 2009 in “Journal of Investigative Dermatology”

UVB radiation harms hair growth and health, causing cell death and other changes in human hair follicles.

Smart Fluids as Autophagy-Activating Photoprotectors: In Vitro Analysis of Dead Sea Water and Magnetized Saline Water Against Ultraviolet B (UVB)-Induced Photodamage in Human Keratinocytes

research Smart Fluids As Autophagy-Activating Photoprotectors: In Vitro Analysis of Dead Sea Water and Magnetized Saline Water Against Ultraviolet B (UVB)-Induced Photodamage in Human Keratinocytes

1 citations , April 2025 in “Cureus”

Dead Sea water and magnetized saline water can protect skin from UVB damage by activating autophagy.

research Oxidative stress in ageing of hair

126 citations , January 2009 in “International Journal of Trichology”

Oxidative stress contributes to hair graying and loss as we age.

research Diagnosis and Management of Melanoma of the Scalp: A Review of the Literature

3 citations , October 2021 in “Clinical, Cosmetic and Investigational Dermatology”

Scalp melanoma, a deadly skin cancer, is often found late due to its hard-to-see location, especially in older men. Early detection, possible treatments, and the role of hairdressers in spotting it early are discussed. More research is needed to improve detection and treatment.