I have a few bottles of Nivea Factor 20 and Factor 30 "Light Feeling" sun lotion, which I'm pretty sure are just over 2 years old. I know there's a lot of debate about whether it's ok to use them after a year, and these bottles have a 12 months symbol on them... With the weather here hotting up (at last!) and with a holiday in Croatia coming up in August, I don't know whether to ditch these or not. Can anyone advise, please?