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Not every two days, not every four days: how often should you wash your hair, according to a dermatologist?

Your scalp is not as “low maintenance” as you’ve been told.
Behind the glossy hair ads and viral hacks, dermatologists are quietly warning about a hidden risk: washing too little can be just as damaging as overdoing it. Sebum, sweat, pollution, product residue… it all builds up, suffocating follicles and triggering itching, odor, even hair loss. And the “once-a-week” trend? For many, it’s a ticking time bom… Continues…