I would seriously invest in a shower head that filters hard water. It's been such a game changer for both my hair and skin. They're relatively inexpensive I got mine on Amazon.
Shower Head and 15 Stage Shower Filter, FEELSO High Output Hard Water Softener Showerhead with Filter Cartridge for Hard Water Remove Chlorine and Harmful Substances https://www.amazon.com/dp/B08FMMLKNS/ref=cm_sw_r_apan_glt_fabc_7SW3FRGN643Z85DP0KB3?_encoding=UTF8&psc=1