Recently, my Mother asked me about her dry hair and scalp. I asked her what she was shampooing Her hair with. She said “they’re all the same”. Not!!!
Many Bargain Brand shampoos are detergent (I will not mention a name, but it’s Green and rhymes with Bell).
I told Mom that just like skin, hair has categories (I remember when I had Hair…). We dye it, straighten/perm curl blow dry and more. All this can damage the hair.