25 Common Beliefs That Are Totally Wrong

Shaving Makes Hair Grow Back Thicker

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Shaving and Hair Growth The myth that shaving makes hair return thicker, darker, or faster is stubborn, but science disagrees. Shaving cuts hair at the skin’s surface, leaving the follicle—the root of growth—untouched. Regrowth might look thicker due to the blunt razor-cut tip feeling rougher. Fresh hair, unbleached by sun, can also seem darker at first. But its actual thickness or speed stays the same.

This idea sticks because of how regrowth feels and looks. Knowing hair biology clears this up—shaving is just a surface fix, not a way to change how hair grows.