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My solution is to have the same rigid shower routine for the past 20 years.
(lemmy.dbzer0.com)
Changing my shampoo brand adds extra overheads
It might be worth going no shampoo. I've been doing it for years and I love it. I just do an apple cider vinegar rinse once a week or as needed. Way better for your scalp once it adjusts too, rather than putting all the crappy chemicals that most shampoos use on your scalp.