New research from a 2016 American Academy of Dermatology (AAD) survey revealed many people are still confused when it comes to SPF numbers on product labels, and some may not be using sunscreen properly, which could increase their skin cancer risk.
In the survey, only 32% of respondents knew that an SPF 30 sunscreen does not provide twice as much protection as an SPF 15 sunscreen. Moreover, only 45% knew that a higher-SPF sunscreen does not protect from the sun longer than a lower-SPF sunscreen.
“It’s important that everyone understands what they are seeing on a sunscreen label,” said Abel Torres, MD, JD, FAAD, dermatologist and president of the AAD. “A sunscreen with an SPF of 30 blocks up to 97% of the sun’s rays. Higher SPFs block slightly more rays, but a higher-number SPF does not allow you to spend more time outdoors without reapplication; all sunscreens should be reapplied every two hours, or after swimming or sweating.”
And while 85% of participants in the AAD survey knew that sunscreen needs to be reapplied after swimming, a new study from the Johns Hopkins University School of Medicine, published recently in the Journal of the American Academy of Dermatology,1 indicates that some people may not be using sunscreen correctly. In studying 758 people with a history of nonmelanoma skin cancer (NMSC) and 34,161 control participants Fischer and colleagues found that those with a history of NMSC were more likely to seek shade, wear protective clothing, and apply sunscreen, but they still received sunburns as often as those without a history of NMSC. While seeking shade and wearing protective clothing were associated with lower odds of sunburn, sunscreen use was not.
“While it makes sense that people with a history of skin cancer were more likely to practice sun protection, we were surprised to see that their methods were not always effective,” said Anna L. Chien, MD, FAAD, one of the study’s coauthors. “Our results reinforce the importance of everyone using multiple types of sun protection; people who rely only on sunscreen may not be applying enough, covering all their exposed skin or reapplying often enough to shield themselves from the sun’s harmful UV rays.”
The AAD recommends that everyone protect themselves from the sun by seeking shade; wearing protective clothing, such as a long-sleeved shirt, pants, a wide-brimmed hat and sunglasses; and using a broad-spectrum, water-resistant sunscreen with an SPF of 30 or higher, applying enough to cover all exposed skin—for most adults, this is about 1 oz, or enough to fill a shot glass. Sunscreen should be applied 15 minutes before sun exposure and reapplied every 2 hours, or after swimming or sweating.
Reference
1. Fischer AH, Wang TS, Yenokyan G, Kang S, Chien AL. Sunburn and sun-protective behaviors among adults with and without previous nonmelanoma skin cancer (NMSC): A population-based study [Published online May 11, 2016]. J Am Acad Dermatol. doi:10.1016/j.jaad.2016.02.1236.
New research from a 2016 American Academy of Dermatology (AAD) survey revealed many people are still confused when it comes to SPF numbers on product labels, and some may not be using sunscreen properly, which could increase their skin cancer risk.
In the survey, only 32% of respondents knew that an SPF 30 sunscreen does not provide twice as much protection as an SPF 15 sunscreen. Moreover, only 45% knew that a higher-SPF sunscreen does not protect from the sun longer than a lower-SPF sunscreen.
“It’s important that everyone understands what they are seeing on a sunscreen label,” said Abel Torres, MD, JD, FAAD, dermatologist and president of the AAD. “A sunscreen with an SPF of 30 blocks up to 97% of the sun’s rays. Higher SPFs block slightly more rays, but a higher-number SPF does not allow you to spend more time outdoors without reapplication; all sunscreens should be reapplied every two hours, or after swimming or sweating.”
And while 85% of participants in the AAD survey knew that sunscreen needs to be reapplied after swimming, a new study from the Johns Hopkins University School of Medicine, published recently in the Journal of the American Academy of Dermatology,1 indicates that some people may not be using sunscreen correctly. In studying 758 people with a history of nonmelanoma skin cancer (NMSC) and 34,161 control participants Fischer and colleagues found that those with a history of NMSC were more likely to seek shade, wear protective clothing, and apply sunscreen, but they still received sunburns as often as those without a history of NMSC. While seeking shade and wearing protective clothing were associated with lower odds of sunburn, sunscreen use was not.
“While it makes sense that people with a history of skin cancer were more likely to practice sun protection, we were surprised to see that their methods were not always effective,” said Anna L. Chien, MD, FAAD, one of the study’s coauthors. “Our results reinforce the importance of everyone using multiple types of sun protection; people who rely only on sunscreen may not be applying enough, covering all their exposed skin or reapplying often enough to shield themselves from the sun’s harmful UV rays.”
The AAD recommends that everyone protect themselves from the sun by seeking shade; wearing protective clothing, such as a long-sleeved shirt, pants, a wide-brimmed hat and sunglasses; and using a broad-spectrum, water-resistant sunscreen with an SPF of 30 or higher, applying enough to cover all exposed skin—for most adults, this is about 1 oz, or enough to fill a shot glass. Sunscreen should be applied 15 minutes before sun exposure and reapplied every 2 hours, or after swimming or sweating.
Reference
1. Fischer AH, Wang TS, Yenokyan G, Kang S, Chien AL. Sunburn and sun-protective behaviors among adults with and without previous nonmelanoma skin cancer (NMSC): A population-based study [Published online May 11, 2016]. J Am Acad Dermatol. doi:10.1016/j.jaad.2016.02.1236.
New research from a 2016 American Academy of Dermatology (AAD) survey revealed many people are still confused when it comes to SPF numbers on product labels, and some may not be using sunscreen properly, which could increase their skin cancer risk.
In the survey, only 32% of respondents knew that an SPF 30 sunscreen does not provide twice as much protection as an SPF 15 sunscreen. Moreover, only 45% knew that a higher-SPF sunscreen does not protect from the sun longer than a lower-SPF sunscreen.
“It’s important that everyone understands what they are seeing on a sunscreen label,” said Abel Torres, MD, JD, FAAD, dermatologist and president of the AAD. “A sunscreen with an SPF of 30 blocks up to 97% of the sun’s rays. Higher SPFs block slightly more rays, but a higher-number SPF does not allow you to spend more time outdoors without reapplication; all sunscreens should be reapplied every two hours, or after swimming or sweating.”
And while 85% of participants in the AAD survey knew that sunscreen needs to be reapplied after swimming, a new study from the Johns Hopkins University School of Medicine, published recently in the Journal of the American Academy of Dermatology,1 indicates that some people may not be using sunscreen correctly. In studying 758 people with a history of nonmelanoma skin cancer (NMSC) and 34,161 control participants Fischer and colleagues found that those with a history of NMSC were more likely to seek shade, wear protective clothing, and apply sunscreen, but they still received sunburns as often as those without a history of NMSC. While seeking shade and wearing protective clothing were associated with lower odds of sunburn, sunscreen use was not.
“While it makes sense that people with a history of skin cancer were more likely to practice sun protection, we were surprised to see that their methods were not always effective,” said Anna L. Chien, MD, FAAD, one of the study’s coauthors. “Our results reinforce the importance of everyone using multiple types of sun protection; people who rely only on sunscreen may not be applying enough, covering all their exposed skin or reapplying often enough to shield themselves from the sun’s harmful UV rays.”
The AAD recommends that everyone protect themselves from the sun by seeking shade; wearing protective clothing, such as a long-sleeved shirt, pants, a wide-brimmed hat and sunglasses; and using a broad-spectrum, water-resistant sunscreen with an SPF of 30 or higher, applying enough to cover all exposed skin—for most adults, this is about 1 oz, or enough to fill a shot glass. Sunscreen should be applied 15 minutes before sun exposure and reapplied every 2 hours, or after swimming or sweating.
Reference
1. Fischer AH, Wang TS, Yenokyan G, Kang S, Chien AL. Sunburn and sun-protective behaviors among adults with and without previous nonmelanoma skin cancer (NMSC): A population-based study [Published online May 11, 2016]. J Am Acad Dermatol. doi:10.1016/j.jaad.2016.02.1236.
