What SPF Should I Use Daily?
We all know that sun exposure can damage our skin and a good sunscreen can help prevent this damage. The ultraviolet rays from the sun are responsible for sun burn, skin damage, pigmentation problems and even skin cancer. Sun Protection Factor is a rating of the level of protection of a sunscreen that you’ll get while using it on your skin. This factor is inversely proportional to the amount of melanin in your skin means if you are fair ( less melanin) then you need to go for sunscreen with higher SPF and vice versa.
If a person can stay in the sun for 15 minutes without having a sunburn then SPF of 4 should increase his time to one hour. But, it is always better to use sunscreen with 15 as a minimum sun protection factor. Some other factors also affect the SPF you should use like medication, duration of the sun exposure and the time of day.
If you want to stay out in the sun for extended periods then it is better to use a sunscreen with minimum SPF of 30. Here are some more tips on how to determine the sun protection factor.
In order to determine the sun protection factor you need, first of all, multiply the SPF with minutes of sun exposure and divide it with 60 to determine the hourly protection. So, choose a good quality sunscreen with higher sun protection factor and use it every time before going outside in the sun.