i'm only gonna say this once....
P20
for those of you who have not used it before, you apply it once a day (in the morning, one and half hours before you go in the sun) and you don't have to apply it again for the rest of the day. it bonds to the skin so only comes off when your skin sheds naturally. therefore you can go swimming etc and not have to worry about putting it back on.
personally, i love it because its not sticky and you don't become human fly paper (why is there not a smiley for human fly paper?) and its great if you are sunbathing on a sandy beach. nothing worse than having to reapply sun tan lotion when you come out of the sea on a sandy beach.
i cycled all day in 30 degree heat in france and it worked a treat. and i am VERY fair skinned and burn just looking at the sun.
which brings me to the second reason i love it... i can put my fake tan on after coz it's not greasy
it's factor 20 but i'm sure you guessed from the name.