Sunscreen – what percentage SPF does someone need and how often to reapply?

what percentage SPF does someone need and how often to reapply

Sunscreen – what percentage SPF does someone need and how often to reapply?

Your first sunscreen mistake is not wearing any and we all know that spending too much time in the sun can increase the risk of skin cancer and premature skin aging. On top of that, studies found that daily sunscreen could slow your skin aging. In the article below we will help you determine what percentage SPF you’ll need as well as how often you should reapply.

What Is SPF?

Often those sunscreens do a better job at protection against UVB which have an SPF of 15 or higher. SPF is an abbreviation for Sun Protection Factor. It is a measure of the ability of a sunscreen to prevent UVB from damaging your skin. It works by extending the time which is required by UVB to affect your skin. For instance, if your unprotected skin takes 20 minutes to start turning red then using a sunscreen of SPF 15 will prevent reddening 15 times longer which is approximately 5 hours.

There is another way to look at this which is in terms of percentages. SPF 15 sunscreens filter out approximately 93% of incoming UVB rays. Sunscreens with SPF 30 filters out 97% while a sunscreen with SPF 50 filters out 98%. These might seem like small and negligible differences but if you have a history of skin cancer or if you are light-sensitive then these extra percentages will make a huge difference.

What Type of Sunscreen Should I Use?

The type of sunscreen you should use depends on the amount of sun exposure you are about to get. In most cases, it is recommended by experts that you use a broad-spectrum sunscreen which offers protection against both UVB and UVA rays.

Most of the sunscreens available in the market today combine many different active physical and chemical ingredients to provide broad-spectrum protection. Mostly, at least 3 active ingredients are added. These usually include salicylates, PABA derivatives, and cinnamates for UVB absorption. For shorter-wavelength UVA protection benzophenones are added while for the remaining UVA spectrum ecamsule, zinc oxide, avobenzone, and titanium dioxide is added.

How Much Sunscreen Should I Use and How Often Should I Put it on?

You need to apply 1 oz of sunscreen for ensuring that you get the full SPF of that particular sunscreen. Research studies indicate that people mostly apply only a quarter to half of that amount. Which mean that their body has much lower SPF on it as compared to the advertised SPF. An average person must use from one quarter to one half of an 8 oz sunscreen bottle during a long day on the beach. You must apply the sunscreen at least 30 minutes before exposure to the sun. This will allow the sunscreen ingredients to fully blend into your skin. Reapplication of sunscreen is just as important as putting it on in the first place. So, you must apply the same amount of sunscreen every 2 hours. Sunscreens must also be reapplied right after toweling off, swimming, or a lot of sweating.

What Treatments Can I Use?

If you have sensitive skin and even applying the right amount of sunscreen is not helping then its time to seek professional advice. At Body Lyft Systems we specialize in all kinds of skin treatments and our procedures are completely safe. If you want a free consultation before taking any treatment then feel free to contact us anytime.

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