My mother's advice was, like so many others, to keep the make-up light and natural and to use lemon juice (for blondes), and beer or vinegar (for brunettes) in the final hair rinse. I used to follow this, but haven't for some years - perhaps I might give it a try next time I wash my hair. She also advised a beaten raw egg as an occasional conditioner - I only did this once as I didn't rinse it properly, used a hairdryer, and ended up picking scrambled egg out of my hair for days.
My grandmother's advice was to use rainwater to wash your hair - she had a rain butt and the water in it was so soft and clean. I can't imagine with all the pollution we have now that this would be a good idea!
Mine to my daughters was always to wear a bra in bed to avoid sagging in later life - this was passed on to me by a midwife 34 years ago and I must say, it seems to be working so far. Whether my daughters listened to me? - well, I suppose time will tell.... 