In terms of the best piece of beauty advice I've ever received, I can't pick just one, there are two. The first is double cleansing at night. I can't believe I only used to cleanse once with a foaming face wash for so long! learning about double cleansing was a revelation! The second is wearing SPF every day rain or shine. I'm 48 and when I was younger suncreams, particularly for the face were horrendous - thick and greasy! They've moved on such a long way such that I really don't notice wearing a high SPF at all these days.