P20 now comes in spray form 30spf and 50 spy as well as the 'old'20 (haven't seen 10spf this year) It was halfprice in a well known high street chemist Ll*** that isn't B****. Don't know whether it still is or not. The 30 and 50 suggest that they act as a block, whereas the 20 'allows gradual tanning' We've stuck with the 20 as that's what Freckles Features (me) and the Drama Queen (teenage daughter) have used successfully in the past. I gave the bottle of 50 to my SIL for her red head DD. Not sure this week in the West Country will have given it a proper testing however.