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How Often Should You Wash Your Hair? A Dermatologist’s Guide to Clean, Healthy Hair

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Your scalp produces oil (sebum) based on genetics and hormones, not how often you wash.

However, harsh shampoos or overwashing can temporarily trigger rebound oiliness as your scalp tries to compensate for dryness.

✅ Solution: Use a gentle, sulfate-free shampoo and avoid scrubbing aggressively.

🚿 Signs You’re Washing Too Much (or Too Little)

Too Often

Not Enough

Dry, brittle ends

Greasy roots within 1 day

Itchy, tight scalp

Flaking that isn’t dandruff (just buildup)

Faded color (for dyed hair)

Flat, lifeless hair that won’t hold volume

Frizz and breakage

Unpleasant odor even after light sweating

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