The main difference between bleaching and dyeing hair is that bleaching involves stripping your hair of colour while dyeing involves changing the colour of your hair.
If you feel the need to refresh your look by changing your hair colour, bleaching and dyeing are two options for you. Both can change the colour of your hair, but bleaching can only give you a lighter shade. Dyeing, on the other hand, offers more shade options.
Bleaching gives you a lighter shades while dyeing gives you any colour you want.
Bleaching removes any colour whatsoever from your hair while dyeing coats hair strands with a colour.