Is it possible to have shiny hair even in middle age?

As I get older, I find myself caring just as much about my hair texture and volume as I do about my skin. In the past, my hair would look shiny even with just a quick shampoo, but lately, it’s upsetting to see it visibly becoming dry, brittle, and thin. I’m trying to take supplements and work hard on home care, but has anyone seen results from hair care in middle age? Recommendations for shampoos or conditioners are welcome, and please share your wisdom on small, practical habits that are easy to incorporate into daily life.