I haven't found it yet ! As you probably know, the higher numbers are worse .. I find that if I use a 30 the effect is not too bad and the stains will come out with somethig like Shout, pre-treated for about 10 minutes before wash.. I use "NO AD" 30, and have been happy that it doesn't make nearly as much mess as some of the others.. A 30 rating is OK for me if re-applied a couple of times during the day. We use a lot of sunscreen here since we sail year 'round..