Harley Street Skincare Mar 1, 2015 0 Comments Posted in:

As a general rule, the higher the number the more protection a cream offers. The number actually relate to the length of time you can stay in the sun without burning and how much protection the product will give you. For instance an SPF25 will reduce the burning effect of the sun on your skin by 25 times – so if you spend 25 minutes in the sun, it would be equivalent to just one minute without sun protection