What is SPF—and How Does It Work?

MH-ask-spf

Më shumë në seksionin  Anti Rrudhë këtu


 

From premature wrinkles to full-blown melanoma, the effects of that painful red sunburn can leave lasting damage. Because skipping that midday swim or Saturday afternoon ball game simply isn’t an option, it’s crucial to know how to protect your skin against the sun’s harmful rays.

SPF stands for sun protection factor, which measures the amount of time you can spend outside before the sun-blocking effect wears off. So if you use SPF 15, your skin can stand the sun for 15 times longer than it would be able to unprotected. There are two types of damaging ultraviolet rays: UVB and UVA. In a nutshell, UVB exposure has here-and-now consequences, such as sunburn. UVA generates long-term effects—wrinkling and aging, according to the American Melanoma Foundation. Experts recommend using at least SPF 15. Opt for a sunscreen labeled “broad spectrum,” meaning it will shield your skin from both UVB and UVA, such as Jack Black Sun Guard Sunscreen SPF 45.

Timing is everything. Regardless of which type of blockage you use, it should be reapplied every two hours—more if you go for a swim or if you work up a sweat. For more active guys, try Coola Sport SPF 30 Unscented Sunscreen Spray. To get the full effects, rub it in generously. Apply an ounce per sitting—about the size of your thumb. SPF isn’t just in sunscreen, either. Certain sunglasses and types of clothing—check out the L.L. Bean BeanSport Polo with UPF 50+—can also offer added armor.

Sunscreen and sunblock are not created equal, however. They both have different approaches to how they protect your skin from the sun. Sunscreen chemically absorbs the harmful rays before they can hit your skin. It is transparent and needs 30 minutes to absorb before it is effective. Sunblock, on the other hand, deflects the rays before they reach your skin. Sunblock is thicker than sunscreen and often goes on with a white film. Think: the white stuff your lifeguard puts on his nose. Although zinc-oxide-infused sunblock naturally protects against both UVB and UVA rays, its level of protection isn’t measurable. SPF, on the other hand, measures the level of protection in sunscreen. Sunblock, which has fewer irritating ingredients than sunscreen, is your best bet if you have sensitive skin. Just watch those new board shorts—the thick paste is known to get messy.

Source:  @MensHealthStyle for more answers to your style and grooming questions.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s