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Glossary Sun Damage

harm caused by UV radiation leading to skin and hair issues

Sun damage, also known as photodamage or UV damage, refers to the harm caused to the skin and hair by prolonged exposure to ultraviolet (UV) radiation from the sun. This can lead to a range of issues, including sunburn, premature aging (such as wrinkles and age spots), and an increased risk of skin cancer. UV radiation can also weaken hair structure, leading to dryness, brittleness, and color fading.

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Research

5 / 1000+ results

research 642 Uncovering the role of UV exposure history and genetics in determining skin sun damage

1 citations , April 2016 in “Journal of Investigative Dermatology”

This study found that facial sun damage scores from UV photography correlate with skin cancer and melanoma risk factors, suggesting this technology may help identify individuals at higher risk.

research Protein Kinase Cε, which Sensitizes Skin to Sun's UV Radiation–Induced Cutaneous Damage and Development of Squamous Cell Carcinomas, Associates with Stat3

76 citations , February 2007 in “Cancer Research”

This study reported that UVR induced PKCε phosphorylation of Stat3 in transgenic mice, suggesting a role in enhancing sensitivity to UVR-related skin cancer development.

research Frontal Fibrosing Alopecia and Sunscreen Use: A Cross-sectional Study of Actinic Damage

2 citations , May 2022 in “Acta dermato-venereologica”

In this study, patients with frontal fibrosing alopecia showed more actinic damage than control subjects, suggesting sunscreen use by these patients may be a consequence rather than a cause of the condition.

research Measuring oxidative damage to human hair from solar radiation and pollution: A critical review

May 2026 in “Journal of Photochemistry and Photobiology”

This review found that solar radiation, pollution, and trace metals cause significant damage to human hair, with factors like UVB radiation primarily affecting light-colored and bleached hair; most data were derived from in vitro and ex vivo simulations.

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”

This study found that UV radiation exposure during a simulated Brazilian summer caused more significant mechanical damage to natural hair than bleaching, although both caused comparable structural alterations, with double bleaching leading to the most severe protein degradation.

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Learn

3 / 801 results

learn Scalp Micropigmentation

How can I protect my scalp from sun exposure after a scalp micropigmentation treatment? Wear a hat or high-SPF sunscreen to protect your scalp from sun exposure.
Can I go in the sun after scalp micropigmentation? Avoid direct sun exposure for 2 to 4 weeks after scalp micropigmentation.

learn Tretinoin

the gold standard retinoid in dermatology that's also helpful for hair regrowth alongside Minoxidil

learn Hair Transplant

When can I go in the sun after a hair transplant? Avoid direct sun exposure for at least 2 to 6 weeks after a hair transplant.

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Community Join

5 / 403 results

community Are These Babyhairs? (M30, 8.5 Months Fin, 4 Months Min)

8 upvotes 3 weeks ago

The user has been using oral finasteride and topical minoxidil with tretinoin for hair regrowth, noticing new baby hairs after a shedding phase. Users advise wearing sunscreen or a hat to protect the scalp from sun damage.

community When should I apply topical tretinoin solution?

5 upvotes 5 years ago

The conversation discusses applying a topical solution containing 0.01% tretinoin, 1.5% azelaic acid, and 5% minoxidil for hair loss. It is recommended to apply tretinoin at night and use sunscreen during the day to prevent skin damage.

community Sunlight: Does it Stimulate Hair Growth or Hair Loss?

in Research/Science 64 upvotes 2 years ago

The conversation discusses whether sunlight exposure affects hair growth or loss, with mixed anecdotes and theories but no clear consensus. Some suggest moderate sunlight can benefit hair by providing vitamin D, while others doubt its effectiveness compared to treatments like Minoxidil or finasteride.

community 1 year 3 months finasteride and back to the drawing board..

5 upvotes 4 years ago

The user has been using finasteride for over a year, which improved their hairline but not the crown area. They are considering alternatives like hair fibers, derma stamping, or possibly minoxidil, while avoiding topicals due to their work environment.

community Finasteride and “anti-aging” effects

in Treatment 218 upvotes 1 year ago

Finasteride may help users look younger by suppressing DHT, affecting skin and hair. Users also emphasize skincare, sunscreen, and lifestyle for maintaining a youthful appearance.

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Experts

1 / 1 results

28
Hair Transplant Surgeon
Dr. Sun Zhengwu, MD
Malmö, Sweden

Clinics

6 / 9 results

All 9 clinic results →

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Dr. Sun Zhengwu, MD