If you've ever dealt with dry, itchy scalp issues, you're probably familiar with the wormhole of advice on the Internet: Special shampoos? Home recipes? Dry shampoo? No shampoo? The slew of advice usually makes me flustered, in which case I shut my computer and ignore the issue until the next time a "helpful" human points out that I "have fuzz or something" in my hair. Deep sigh.

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