Ultraviolet A (UVA) is made up of wavelengths 320 to 400 nm (nanometers) in length. Ultraviolet B (UVB) wavelengths are 280 to 320 nm. Ultraviolet C (UVC) wavelengths are 100 to 280 nm. Only UVA and ...

However, light that leaves our star also contains UVC radiation, which has a shorter wavelength than UVA or UVB light and ...

The product passed UVA tests but failed the UVB/SPF tests with scores of 25.7 and then 20.7 – short of the 30 or more needed to pass. The Ultrasun Family SPF30 sunscreen (Which?) ...

We all know the importance of putting suncream on each day - especially during a heatwave, and now there's no excuse with these supermarket own branded lotions ...

一年四季都要防晒吗？是的，紫外线包括UVA，UVB，UVC，其中对皮肤危害较大的为UVA和UVB，UVB会导致皮肤晒红晒伤，而UVA会导致皮肤晒黑且造成衰老，所以防晒是抗老化的主要工作，所以一年四季都要做好防晒，那么不脱妆的防晒霜有哪些？实测分享防晒霜推荐，这些防水防汗！ ##露卡菲YA防晒霜 不脱 ...

【#向无效防晒说no#】#防晒产品SPF值不是越高越好# UVA和UVB是什么意思？防晒产品的SPF值越高越好吗？皮肤科专家@仙鹤大叔张文鹤 提醒：UVA是长波 ...

这意味着炎热的夏天开始了！ ！ 我们在享受阳光的同时 也需要注意“紫外线”的伤害 今天带大家了解了解 紫外线 吧~ 什么是紫外线 紫外线辐射 (UVR) 也称紫外线, 属非电离辐射，波长范围在100～400nm 之间,根据波长主要分为UVA、UVB、UVC三种，波长越长，穿透力就越强。

Plus, it’s polarized and has 100% UVA/UVB protection for your eyes. On top of that, the iconic look and fit are lightweight and comfortable to wear.

This dermatologist-formulated sunscreen for dry skin blends haldi (turmeric) and 1% hyaluronic acid. These ingredients may help hydrate, brighten, and protect skin. It shields from UVA/UVB rays ...

Ultrahuman’s absurdly expensive Home monitor doesn’t do much The $549 box sends home environment data to your phone, but it can’t control any smart devices to improve things.