All About Sunscreen - The Skin Cancer Foundation
SPF stands for Sun Protection Factor. The number tells you how long the sun’s UVB rays would take to redden your skin if you apply the sunscreen exactly as directed compared with the amount of time without sunscreen.
Sun Protection Factor (SPF) | FDA - U.S. Food and Drug Administration
SPF is a measure of how much solar energy (UV radiation) is required to produce sunburn on protected skin (i.e., in the presence of sunscreen) relative to the amount of solar energy required to...
'What SPF Do I Need?' Here's a Dermatologist's Reliable Method …
2023年4月6日 · SPF stands for “sun protection factor”—but specifically, says Megan Rogge, MD, a board-certified dermatologist and assistant professor of dermatology at UTHealth Houston, SPF is a marker of protection against the sun’s UVB rays.
What Does the SPF Number Mean? - Verywell Health
2023年10月10日 · SPF stands for Sun Protection Factor. The SPF number indicates the level of protection against ultraviolet (UV) B rays. Sunscreens with a higher SPF offer greater protection from the sun.
What does SPF mean? | MD Anderson Cancer Center
2021年5月28日 · Before you buy sunscreen, it’s important to understand what sun protection factor, or SPF, means. That’s the number you see on the bottle when you’re picking out your sun safety products. A sunscreen’s SPF is a measure of how well it …
Sun protection factor (SPF): What is the best sunscreen?
2018年6月18日 · Sun protection factor (SPF) is a number, for example, SPF15. It indicates how much protection a product offers against UVB light. A product with a higher SPF number will offer greater protection.
SPF Meaning: How Sunscreen Actually Works | The Well by …
SPF stands for “sun protection factor,” and represents how well a specific sunscreen protects against the sun’s harmful ultraviolet B (UVB) rays, which, according to the American Cancer Society, can cause skin cancer, sunburn, and premature aging of the skin, while also weakening the immune system.
What Does SPF Mean? - Consumer Reports
2024年6月15日 · SPF—or sun protection factor—is a measure of how well a sunscreen guards against sunburn. The SPF number is usually explained as the amount of time it takes for skin to turn red while...
What SPF Should I Use? - Healthline
2023年6月22日 · SPF is short for sun protection factor. In sunscreen, SPF helps to block your skin from the sun’s radiation. The sun emits two types of radiation: UVA and UVB rays.
Decoding Sunscreens: What SPF Should I Use? - CeraVe
SPF (sun protection factor) determines how well a sunscreen protects your skin from UV rays. Here, learn how to identify the right sunscreen and SPF value for your needs.