Is it just me that had completely no idea how SPF (sun protection factor) works?
I thought the SPF number indicated the strength of the suncream. WRONG.
It is an indicator of how much protection you receive in relation to time spent in the sun.
For anyone as confused as i was this means wearing an SPF value of 20 means you can stay in the sun 20 times as long as you would normally be able to.
Not so useful after i have just returned from a sweltering week in Egypt, but interesting eh?