SPF: Fact versus Fiction

Each day, more people learn about the importance of wearing sunscreen whenever they’re outdoors to shield themselves against the sun’s harmful UV (ultraviolet) rays. While that news is heartening, getting that information out is only half of the battle.

If a user misunderstands how a sunscreen’s Sun Protection Factor (SPF) works, or if the product is incorrectly applied, the level of protection received can be considerably lower than he or she believes it to be. That can be very dangerous.

Here’s why:

If your mouthwash contained a lesser percentage of cinnamon flavor than you thought it did, it would make absolutely no difference as far as your health is concerned. However, if you walked around every day thinking you were wearing a sunscreen that provided more skin defense than it actually did, that mistaken notion could end up resulting in skin cancer. Or, even worse, the potentially deadly melanoma.

Don’t Get Burned, Either Literally or Figuratively

We’d like to help clear up this confusion. There is a view held by many that, because an SPF 50 sunscreen absorbs 98% of UVB radiation while an SPF 100 sunscreen absorbs 99%, just 1% more, the SPF 100 sunscreen offers hardly any advantage over the SPF 50 sunscreen. That’s a misinterpretation of the facts.

If an SPF 100 sunscreen is correctly applied and continually re-applied every two hours at a minimum, (or immediately after swimming or profuse sweating) it’ll provide adequate skin protection for double the amount of time that a SPF 50 sunscreen will.

But Wait, There’s More!

There are other ways that we inadvertently end up leaving ourselves vulnerable to those dangerous UV rays. We’ll go over a few here.

It’s the rare person who applies an amount of sunscreen sufficient enough to reach the SPF level touted by the product. And, whether they do or not, most don’t re-apply it as needed- if they even re-apply it at all.

Every time you use sunscreen, the goal should be to cover every sun-exposed inch of skin. If you’re in a swimsuit, the necessary quantity is enough to fill a shot glass. In fact, instead of guessing, consider simply using an actual shot glass.

Unfortunately, independent studies have shown that an alarming number of sunscreen brands don’t meet the SPF ratings that their packages trumpet. It’s important to do a little online research on your favorite brand to see if the claimed SPF is accurate.

Finally, it bears repeating. You’ve probably heard that famous real estate slogan, it’s all about location, location, location! With sunscreen, think re-application, re-application, re-application! If you’re going to be spending time outdoors, re-application is as important as applying sunscreen is to begin with.

*Additional source: Melanoma Education Foundation (MEF) Fall 2016 Newsletter

To visit our websites, please click: Skincheck.org and/or Melanomaeducation.net

Facebook: Melanoma Education Foundation

Twitter: @FindMelanoma

SPF is Far Less Important than How Much is Applied

Anyone with even the most basic awareness of skin cancer is likely to know that the Golden Rule of practicing sun-safety is to wear sunscreen. The only better protection from the sun’s harmful UV (ultraviolet) rays is to sit inside your home with all the window shades drawn.

Unfortunately, though, there is a key piece of information regarding sunscreen of which far too many people are unaware.

Get the Maximum SPF Out of Your Sunscreen

First, if you’re a regular sunscreen user- excellent job. However, it’s equally important to apply the correct amount. This is the only way to ensure that the sun protection factor (SPF) sun-shield that you’re actually receiving is identical to what is stated on the product.

Many of us, albeit unwittingly, fall into that category. The typical wearer applies a mere 25% of what’s required to achieve a sunscreen’s full safety potential. And while 75% off may be fantastic for department store sales; it is disastrous to our skin. To illustrate further, when 25% of an SPF 100 rated sunscreen is applied, the true SPF isn’t 25- it’s only 3.2.

Anyone who spends even a brief time reading up on skin cancer and melanoma, will inevitably come across a few of the same specific comparisons used in a wide variety of materials. The one relevant to this post is that the minimum volume of sunscreen to use for each application would be enough to fill a shot glass. It’s also important that it be evenly distributed across any exposed skin, and be re-applied at a maximum of two hours. Even sooner than that if you’ve been sweating or swimming.

Speaking of the latter, spending a day at a beach or pool wearing only a swimsuit is not a good idea. However, anyone who does should use up an entire a 6-ounce container of sunscreen on him or herself by the time they leave. Do you use that much or know anyone who does?

The main point is important to reiterate: you must apply sunscreen much more heavily than that of most users to achieve the rated SPF.

Don’t just get your money’s worth of SPF; get your skin’s good health worth.

*Additional sources: Vitals.lifehacker.com, Onlinelibrary.wiley.com

*To visit our websites, please click: skincheck.org and/or melanomaeducation.net

Facebook: Melanoma Education Foundation

Twitter: @FindMelanoma