I'm 46 and have normally quite dry hair as I've been colouring it for 20 years. Over last few months I've noticed that 1 day after washing it seems greasy and has a distinctive 'off' smell. I used to get away with washing hair twice week(shower daily !), as it was very dry and it never smelled! Is it hormone related (maybe approaching menopause?) I've tried various shampoos and have stopped condioning hair as use colour protect shampoo which I feel doesn't fully clean hair, but still ,persists.Any advise please....