As a dermatologist and skincare expert, I have seen firsthand the damaging effects of UV rays on the skin. With summer approaching and more people spending time outdoors, it's crucial to protect our skin from the sun's harmful rays. This is where water resistant SPF comes into play.
The Basics of SPF
SPF stands for Sun Protection Factor and it measures the level of protection a sunscreen provides against UVB rays. These are the rays that cause sunburn and contribute to skin cancer.The higher the SPF level, the more protection it offers. For example, an SPF 30 sunscreen will block about 97% of UVB rays, while an SPF 50 will block about 98%. It's important to note that no sunscreen can provide 100% protection. When it comes to water activities, it's crucial to use a water resistant sunscreen. This means that the sunscreen will maintain its level of protection even after being exposed to water or sweat.
However, it's important to understand that water resistant does not mean waterproof. Sunscreen should be reapplied every two hours, regardless of whether it is water resistant or not.
The Importance of Water Resistant SPF for Outdoor Activities
When we engage in water activities, we are constantly exposed to two elements that can decrease the effectiveness of sunscreen: water and sweat. Water can wash away sunscreen and sweat can dilute it, making it less effective. This is why using a water resistant sunscreen is crucial for outdoor activities. Not only does water resistant SPF provide protection against UVB rays, but it also protects against UVA rays.These are the rays that contribute to premature aging and skin cancer. UVA rays can penetrate through clouds and glass, making it important to use sunscreen even on cloudy days or when sitting by a window. Furthermore, when we are in the water, we are often exposed to more intense sunlight. This is because water reflects sunlight, increasing our exposure to UV rays. This is why it's important to use a higher SPF level for water activities.
Choosing the Right Water Resistant SPF
When it comes to choosing a water resistant sunscreen, there are a few things to keep in mind.Firstly, make sure to check the label for the words "water resistant" and the SPF level. Secondly, look for a broad-spectrum sunscreen, which means it protects against both UVA and UVB rays. Thirdly, consider your skin type and any allergies you may have. Some sunscreens may contain ingredients that can irritate sensitive skin. It's also important to note that water resistant sunscreens come in different forms such as lotions, sprays, and sticks.
It's important to choose a form that is easy for you to apply and reapply throughout the day.
The Risks of Not Using Water Resistant SPF
Not using a water resistant sunscreen during water activities can have serious consequences. As mentioned earlier, UV rays can cause sunburn and contribute to skin cancer. In fact, according to the Skin Cancer Foundation, one in five Americans will develop skin cancer by the age of 70. In addition, not using sunscreen can also lead to premature aging. UVA rays can cause wrinkles, age spots, and sagging skin.This is why it's important to not only use sunscreen, but also to use a water resistant one for outdoor activities.
