What Should I Use If My Baby Has Phlem Is Dry Shampoo Worth It? Or Should I Just Use Baby Powder To Absorb Oil?

Is dry shampoo worth it? Or should I just use baby powder to absorb oil? - what should i use if my baby has phlem

I started to wash my hair every day, as my hairdresser said, but the roots are too thick. I use powder to absorb oil, but I might invest in a dry shampoo or simply continue to use the dust? The only thing is that I live in Canada and not a shop that sold where I live, it must be ordered from the U.S.. If my application? If so, recommendations on brand?