The most crucial factor in sunscreen use is that you are actually using one. You must choose a sunscreen that you enjoy and want to use. Make sure the mineral sunscreen you choose has at least an SPF of 30 and a broad-spectrum composition that shields against UVA and UVB radiation. Water-resistant solutions are a must to apply, reapplying roughly every hour to maintain continuous coverage, if your everyday activities include swimming or working out in the perspiration.