I hope you don't mind me picking your brains but I know you are the expert on this topic.I need a very high factor suncream as I have had a kidney transplant and am prone to skin cancer from the drugs I have to take but the doctor recommended one and it goes all white and chalky not a good look.Have tried Liz Earle but also very white and looks silly over a fake tan!Do you know of ant that rub in well and are factor 20+?I know I shouldn't be so vain but am a total beauty product junkie!