Believe it or not I used to use Suave.
Ya know, many shampoos are made the same way commercial soaps...same ingredients, but with different levels of water added. Suave is cheap because it has more water.
I'm 60...needless to say I have used a LOT of different shampoos and conditioners over the years. From inexpensive Suave to very expensive 'professional' salon brands. I've had different lengths of hair...from touching my shoulders to being about to sit on it. Until a few years ago, I had been coloring my hair...sometimes professionally, mostly myself. I also had a perm a few times, but that was a long, long time ago.
Things I have learned over the years:
1) Shampoo is for the scalp, conditioner is for the hair.
2) Under normal circumstances, you should only wash your hair every three days. Most 'products' along with dirt and sweat will rinse out.
3) Brush/comb you hair before washing...you'll have less tangles. And brush/comb from the bottom to the top. When you brush from the top to bottom, all you are doing is pushing the tangles down and tightening them up.
4) Less is more. You don't need a head-full of fluffy lather like the commercials to wash your hair...it's a marketing gimmick to get you to use more shampoo. Same with conditioner...don't slather it on.
5) Squeaky clean is great for glasses, plates and pots, but NOT for skin or hair; it's a sign that you have stripped all the natural oils from them.
My hair is waist length...it's mainly silver with some purple streaks except for the underside which is still 'blonde' (weird). Until some health issues about five years ago, my hair was very thick and coarse (I'm white)...it ten thinned out and became fine. I generally wash my hair twice a week...Monday and Friday, but I have gone a week without as I work in an office, have a blank social calendar and am not as active as I used to be.
I use OGX Renewing + Argan Oil of Morocco Shampoo and Conditioner...I like the smell of it and it doesn't trigger hubby's sensitivities. I generally wear my hair in a low pony tail after towel drying. I have bangs that I blow dry and use a light spray of TRESemme Hair Spray...it doesn't trigger hubby's sensitivities. I use about a quarter size dollop on my hands, rub them together and then massage into my scalp first and then wash the rest of my hair. Conditioner is about a half dollar size...I start by dipping my fingers in and putting a bit on the top of my head and then rub my hands together and go down the length of my hair and then a general massage. I make sure I rinse my scalp well and then the rest of my hair. No squeaking.
I keep my bangs trimmed myself, but I do go in two to three times a year and have a half to a full inch. About once every four years I get a good six inches chopped off because regardless of how well I take care it, it gets damaged by normal life.