Which Shampoo and Conditioner to use?

[GirlsonFilm]

I'm 47, menopausal, hair naturally very grey so dyed every four weeks. My hair is starting to look and feel really dry and "old", is there a shampoo and conditioner I should be using that you would recommend?

My ex-mil had lovely hair and used to use Kerastase but I can't remember which one (not too helpful I know) and looking on their websites there are load of different types.

I'd be happy to pay for salon brands if it makes my hair/me feel better.

The kerastase masquintense hair masks are great. They have one for thick hair and one for thin. I used to bleach my hair all the time and it was like straw! The mask really sorted it out (used it a couple of times a week)

Pantene shampoo and conditioner for dyed hair.