High SPF sunscreen can over prompt the protection and overexpose the people towards uva rays and increase the risk of skin cancer. According to the FDA, Sunscreens should reapply every two hours and more often after swimming or sweating.
Must remember to follow this instruction, as a failure of this can retard the sunscreen's efficacy. To get overall protection, go for broad-spectrum sunscreen which also contains the PA factor and antioxidants along with the SPF factor. To know more about broad-spectrum sunscreens, click here. Keep yourself protected and try to limit your outdoor activities during this time. To work this out, you need to know about how many minutes it takes your skin to turn pink without sun protection.
If your skin would normally change colour after 20 minutes of sun exposure, SPF 30 would give you 10 hours of protection. While UVB rays are responsible for fairly instant visible damage, such as the redness of sunburn, UVA rays cause skin to tan, a sign of damage to every layer of skin. Sunscreen gets broken down by direct exposure to daylight, so how often you need to re-apply sunscreen depends on the amount of time you spend outside.
If you are in the office all day, then the sunscreen that you applied in the morning will still be effective when you travel home at the end of the day. If you are swimming or sweating, your sunscreen will wear off more quickly even if it is labelled water-resistant and you will need to reapply it every 40 to 80 minutes.
Now that you know how the SPF rating on sunscreen works, check out the must-know tips in our sun protection articles. Need help with finding the right product for you skin? Our customer care team are skincare and product experts and can guide you to the best skin of your life.
For example, when wearing an SPF 30, you can remain outside for 30 times longer than if you were unprotected. Confusing, right? Now, all sunscreens have mandated directions and water resistance testing results visible on their packaging. Sunscreen can either be effective for up to 40 minutes or up to 80 minutes in water. You should reapply every 40 or 80 minutes while swimming or sweating, depending on the product.
These directions are now easily seen on the packaging. Products with higher SPF values may be misleading and give consumers a false sense of security. Berson: An SPF 50 offers a high level of protection and is best for those with a history of skin cancer or those that are fair skinned or at higher risk for skin cancer.
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How much sunscreen do I need? How long should I wait before going outside? How long does sunscreen last on skin?
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