UV rays are classified according to wavelength: UVA (longest wavelength), UVB (medium wavelength), and UVC (shortest wavelength). Here are some important facts about ultraviolet A (UVA ...

防晒指数，是衡量防晒产品防止紫外线伤害能力的重要指标，它涉及紫外线的种类、皮肤对紫外线的敏感度、防晒产品的成分、使用环境以及防护时间等。 1. 紫外线种类：紫外线分为 UVA、UVB 和 UVC 三种。UVA 能穿透皮肤深层，导致皮肤老化和皱纹；UVB 主要引起皮肤晒伤和红斑；UVC 通常被臭氧层阻挡。防晒指数主要针对 UVA 和 UVB。 2.

Ultraviolet (UV) radiation is a component of sunlight that has significant effects on both the environment and human health. It is divided into three categories: UVA, UVB, and UVC, with UVB being ...

New research suggests moderate sun exposure offers health benefits, challenging traditional protection guidelines and changing public perception.

New research from the University of Copenhagen and NTU Singapore reveals that RNA damage, rather than DNA, plays a primary role in the skin’s immediate response to UV radiation. This RNA damage ...

The sun emits three types of UV light - UVA, UVB and UVC - but while UVC is absorbed by the Earth’s atmosphere, UVA and UVB rays can harm our skin and our eyes. The damage to our eyes can ...

Breaking out in a rash after exposure to sunlight is not uncommon – here’s what you need to know about sun allergy.

Both ultraviolet A (UVA) and ultraviolet B (UVB) light have documented efficacy for treating MF (Abe, Ohnishi, Kan, & Ishikawa, 2003; Herrmann et al., 1995; Querfeld et al., 2005) and response is ...

UV radiation consists of UVA, UVB and UVC rays. While the ozone layer largely blocks UVC, UVB remains a significant concern as it is the main cause of sunburn and skin cancer. Nur Ashikin stressed ...