Keeping your skin healthy and aging at a slower rate is a result of both external care and internal supplementation. A healthy diet also helps slow down the aging process.

There are two systems used to measure the protection of sunscreens against UV rays: SPF (sun protection factor) is a measure of the UV protection used in sunscreens and PA (protection grade of UVA) is a measure of the UVA filtering ability of sunscreens. Understanding what SPF and PA are will help you choose a sunscreen that is more suitable for your needs.