Ultimate guide to anti-ageing your hair: Critics say long hair over 40 is ageing and try-hard. But here are the expert style tricks that are face-slimming, super flattering and take off years - and the common colour mistake you MUST avoid ⊕⊕

From the perfect shade of blonde to the ideal length for women over 50, these are the best ways to de-age your do without reaching for a bottle of bleach or lopping off your locks.