I've tried many & my current favorite is Neutrogena SPF 45 Sunblock Lotion -
http://www.drugstore.com/qxp27873_3...tion_spf_45.htm
SPF 45, nothing! Banana Boat Sport goes up to SPF 60 and Hawaiian Tropic goes up to 50 with 'Baby Faces & Tender Places'. I don't touch anything under SPF 50, myself.