What is the recommended minimum SPF for daily sun protection?

The recommended minimum SPF for daily sun protection is 30. This level of SPF provides an effective barrier against harmful UVB rays, which are primarily responsible for sunburn and can contribute to skin cancer. SPF 30 blocks approximately 97% of UVB rays, offering sufficient protection for daily exposure, especially when considering factors like cumulative sun exposure, which can result from daily activities such as commuting or walking outside. While higher SPFs, such as 50, offer marginally more protection, SPF 30 is generally recognized as an effective minimum for most individuals and meets the guidelines established by dermatological associations for daily use. This balanced protection helps maintain skin health while reducing the risk of sun-induced skin damage.