I cut my hair in my early 40s but only because I always wanted to try short hair and my time for getting that skinny body I always wanted was running out so I did it anyway. I liked it but I’m now back to long hair and I’m 49. I find it easier to manage and have no intention of cutting it again, I’m loving it atm.
i use L’Oréal Professional. It’s more expensive but you can get it on sale regularly. I also occasionally use Avon detoxing shampoo and conditioner, I bought it for my teens greasy hair and will occasionally give mine a wash with it, or use it on holidays so I’m not carrying too many different shampoos ( 5 people with different hair).
I never liked the elvive shampoos, found they always made my hair feel greesy and heavy regardless of type I used.
Ive never been one to splash money on toiletries but I now fully appreciate spending the extra on a decent shampoo. I feel I use less because my hair is in better condition and it’s fully worth it.
Maybe look at things like Olaplex for mature hair, OGX do a mature hair shampoo, I’ve used the greasy hair one, again bought for teen dd and used, it was her go to shampoo till I got her the Avon one to try. Kerastase and Christophe Robin is also a good shampoo brand. But I’m sure there are others out there.
My friend has sworn by collagen supplements for her hair and nails, I’ve just started Elevate but it’s too soon to say. Same friend uses Philip Kingsley, I tried his swim cap recently which I loved but not anything else.