matrix so silver shampoo

I was recommended this by my hairdresser who sells it in their salon also with the matching conditioner.Was abit dubious at first as i have tried so many purple shampoos for my blonde hair and none were effective.This one i leave on for about 4-5 minutes then wash out.This helps neutralise the yellow orange tones in my hair.This works a treat and the price is very reasonable a mid price range product.I have now brought this several times.