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  1. 2012年11月9日 · SPF refers to the ability of a sunscreen to block ultraviolet B (UVB) rays, which cause sunburns, but not UVA rays, which are more closely linked to deeper skin damage. Both UVA and UVB...

  2. 2023年7月24日 · 4 min read. ‌UVA and UVB Rays are different types of a form of energy called ultraviolet (UV) radiation commonly seen as sunlight. Both UVA and UVB rays can cause harm to the skin. But...

  3. www.webmd.com › skin-problems-and-treatments › sun-sensitizingSun-Sensitizing Drugs - WebMD

    2022年4月26日 · There are dozens of medications and over-the-counter drugs that can cause sun sensitivity. Some of the most common include: Antibiotics: doxycycline, tetracycline, ciprofloxacin, levofloxacin ...

  4. 2022年11月29日 · Protection from UV Skin Damage. Taking supplements or consuming foods rich in astaxanthin may also help to protect your skin from ultraviolet (UV) damage. Astaxanthin accumulates in the...

  5. Both UVA and UVB radiation increase your risk of skin cancer. Most sunscreens protect against UVB radiation, but you should use a sunscreen with both UVA and UVB protection...

  6. 2022年11月11日 · In some cases, they happen more gradually. The warning signs include: Eye redness. Pain. Blurry or lessened vision and sensitivity to light. Floaters, those tiny dots or specks in your vision. If ...

  7. 2024年2月29日 · Tanning can cause dark spots and wrinkles. UVA rays also can cause a skin cancer called melanoma, which can be deadly. When melanoma goes undetected, it can spread quickly throughout the body ...