According to the Skin Cancer Foundation , 3 percent of UVB rays can enter your skin with SPF 30, and 2 percent with SPF 50. This is also how you can still get tan while wearing sunscreen. The American Academy of Dermatology recommends using a sunscreen that is at least SPF 30 or higher every day.
According to dermatologist James M. Spencer, the SPF 30 can block up to 97% UVB rays whereas the SPF 15 can block up to 94% of UVB rays. You would of thought that there would be more of a difference since 30 doubles 15 but really there is only a 3% difference.
The SPF 15 protects your skin from the sun, while the browning and tanning lotion acts like a tan accelerant. That means you'll get tanner in a shorter amount of time than you would if you didn't apply the browning lotion.
The SPF number tells you what percentage of UVB rays the sunscreen blocks. The higher the SPF, the more sun protection you'll have. So, you're better off skipping on the tan and opting for SPF 30 or SPF 50.
Experts say sunscreens with an SPF higher than 50 aren't worth buying. They only offer marginally better protection. They might also encourage you to stay out in the sun longer. Instead, choose an SPF between 15 and 50, apply liberally, and reapply often.
You won't find any products claiming to be suntan lotions anymore. Instead, a product that is considered to be a suntan lotion is usually a sunscreen with an SPF of less than 15. These "tanning" sunscreens, which typically have an SPF 4 to SPF 8, do not provide enough sun protection, especially for kids.
So, does sunscreen prevent you from getting tan? No, but this myth continues to prevail. When you look at the science, sunscreens allow people to stay out in the sun longer and protect against the UV rays that can cause skin cancer, but they do not prevent the skin from developing a tan.
Sunscreen will reduce your ability to tan, but you absolutely still will get color. However, you are practicing much safer sun exposure when you wear sunblock, which should make it worth it to get a little bit less tan.
Put another way, if your unprotected skin would take ten minutes to show signs of burning, then properly applying SPF 30 sunscreen would slow the rate of burning to the point where it would take 30 times longer, or 300 minutes in total. SPF 15 would take 150 minutes, while SPF 50, 500 minutes.
Regular daily use of SPF 15 sunscreen can reduce your risk of developing squamous cell carcinoma (SCC) by about 40 percent, and lower your melanoma risk by 50 percent. Help prevent premature skin aging caused by the sun, including wrinkles, sagging and age spots.
What SPF is best for dark skin? The dermatologists we consulted recommend a minimum of SPF 30 — as does the American Academy of Dermatology. However, Henry recommends you apply SPF 50 if you're outside for more than an hour.
Because sunscreen doesn't block all UV rays, this means you can still tan while using it, no matter what the SPF is - so you can still tan wearing SPF 50 sunscreen. The more protective alternative to sunscreen would be to wear sunblock, which is designed to block all UV rays.
Can you still tan using SPF50? The simple answer is yes, you can still tan using every SPF factor whether it is 15, 30 or 50+. The way SPF works is that sunscreen acts as a barrier so that only a certain amount of UV gets through to your skin but this is what makes being exposed to sunlight safer for you.
The lighter your skin, the more easily it will get burned by the sun's UV rays. However, all skin types can get sun burned and suffer damage from UV rays. Therefore, dermatologists recommend that everyone use sunscreen of at least SPF 30.
Sunbathers often assume they get twice as much protection from SPF 100 sunscreen as from SPF 50. But the extra protection is negligible. Properly applied SPF 50 sunscreen blocks 98 percent of UVB rays; SPF 100 blocks 99 percent.
Under ideal conditions (like in a laboratory), a sunscreen with higher SPF protection and broad-spectrum coverage offers more protection against sunburn, UVA damage and DNA damage than comparable products with lower SPF values.
Sunscreen Only Prevents Tanning to a Point
It's a myth that sunscreen prevents tanning altogether. Although sunscreen provides protection against the sun's harmful ultraviolet (UV) rays, there's still a chance you'll get some color on your skin.
Reapply sunscreen every 2 hours and after going in water. Apply SPF to your scalp, the tops of your feet, ears, and other places you can easily miss. Roll over frequently so you tan evenly without burning. Drink plenty of water, wear a hat, and protect your eyes by wearing sunglasses.
Sun Protection Factor (SPF) is a rating that tells how much protection a product provides against sunburn. The higher the number, the greater the protection. An SPF of at least 15 is recommended.
They help to prevent sunburn and premature aging (such as wrinkles, leathery skin). Sunscreens also help to decrease the risk of skin cancer and also of sunburn-like skin reactions (sun sensitivity) caused by some medications (including tetracyclines, sulfa drugs, phenothiazines such as chlorpromazine).
The SPF rating only refers to UVB rays. An SPF 15 sunscreen blocks 93% of UVB radiation, and SPF 30 blocks 97%. After that, the difference in protection is small. SPF 50 blocks 98%, and SPF 100 stops 99% of UVB rays from reaching your skin.
The difference between a SPF 40 is you block out 97.5% of UVB radiation and SPF 50 blocks 98%. This is a very small difference for the cost of purchasing a SPF 50. More important than using a super high SPF is using enough sunscreen.