“More recently, the importance of protecting against both UVB and UVA has been embraced, which is what is called broad-spectrum protection,” explains Beckham. “Omni-Shade fabrics have always provided some degree of broad-spectrum protection, but the newOmni-Shade Broad Spectrumdoes this even ...
UV is most commonly found in sunlight and are classified as UVA, UVB or UVC rays which each cause different levels of harm. From what we know now UVA and UVB are the more damaging UV rays and are found to have caused melanoma, and otherskin cancers, in the past. The strength of the...
So what does all this mean? WBGT is the number one way to keep student-athletes (or anyone exerting themselves outdoors) safe from heat illness. That means it’s better than just monitoring the temperature or heat index. Wet bulb globe provides an accurate measurement of environmental heat str...
What does the water content of a contact lens mean? Disclaimer: The advice in this article is for informational purposes only and does not replace medical care or an in-person check-up. Please check with an eyecare professional before purchasing any products or remedies. For information on our...
What does PA mean? You might also see the label “PA” on your sunscreen’s packaging. PA is short for the protection grade of UVA. It’s a Japanese rating system measuring the effectiveness of blocking UVA rays, while an SPF rating most specifically applies to UVB rays. The PA rating ...
But how much protection is enough and what does UV 400 mean? Sunglasses labeled UV 400 provide nearly 100% protection from harmful ultraviolet light rays, blocking wavelengths up to 400 nanometers, including UVA and UVB rays. Ultraviolet, or UV, rays are electromagnetic radiation from the sun....
SPF 50 protects against 98% of UVB Rays Is more SPF always better? When it comes to SPF, there is a limit. SPF values greater than 50 may be misleading to consumers as values greater than 50 have not be shown to provide substantially more sun protection. Additionally, sunscreens with an...
(a) Differentiate between UVA, UVB, and UVC rays. (b) How each specifically damages the skin? What are the effects on the skin from sitting in the sun? What is rickets? What causes it and how does it affect the body? What does melanin do in the body? Which is the most common typ...
How does sunscreen work? When it comes to active ingredients in a sunscreen, you can expect to see either a physical blocker or a chemical blocker. They cover for both UVB and UVA, but some protect longer than others. Physical blockers, which come in the form of minerals such as zinc ...
When it comes to sunscreens, is higher SPF better? Pros recommend SPF 50 for optimal sun protection, but what do those SPF numbers even mean?