I would also seriously pay attention to how hard your water is and if it’s bad at your place, look into getting a shower head filter, getting a shampoo that works on hard water (ie a clarifying shampoo once a week or so), rinsing with distilled water or even diluted AC vinegar, and of course making sure your water softener doesn’t run out of salt if you have control over that. I went to college and my hair was ruined, even falling out a lil bit before I figured out it was hard water
That’s why I just use a few (depending on what’s available) that I absolutely swear by. Specifically ones that don’t have any of those toxic ingredients or dyes that wayyy to many brands use. Just trying to stay away from that synthetic stuff, ya know? Typically it’s Sienna Naturals, Attitude, or Ursa Major.