My hair is naturally mid brown, but now greying (a lot). It has been dyed since teenage years and is currently a warm mid brown (natural is cooler) with some balyage / bleached bits (yellowy blonde). Am think about going back to a cooler brown and trying to get the blonde bits to be more silvery - any thoughts? Ideally I'd like a Mallen streak.
Will that shampoo with blue / violet tones send it cooler or do I need a professional intervention?