BLDN guide
Razor bumps after shaving your head
Razor bumps happen when a cut hair curls back and re-enters the skin. They're more common with coarse or curly hair, and the back of the head is the usual trouble spot because the grain changes direction there.
Prevention, in order of impact
- Shave with the grain. Against-the-grain passes are the single biggest cause of bumps.
- Clip to stubble first so the blade isn't fighting length.
- Use a sharp blade and replace it before it starts tugging.
- Never stretch the skin tight while shaving — it cuts the hair below the surface.
- Shave less often for a while. Letting stubble grow for a few days can settle irritated skin.
- Consider an electric head shaver, which cuts slightly above the skin.
If you already have them
- Stop shaving that area until the skin calms down.
- Warm compress, then a gentle non-comedogenic moisturiser.
- Don't dig hairs out with tweezers or a needle — that's how scarring and infection start.
- Over-the-counter products with salicylic or glycolic acid can help, but introduce one at a time.
When to see a professional
See a board-certified dermatologist if bumps are painful, spreading, filled with pus, leaving dark marks or keloid scars, or if they keep coming back despite changing your technique. Persistent razor bumps are a treatable medical condition, not something to endure.
Sources
Health information on BLDN is general and educational. It is not medical advice. For diagnosis or treatment, see a board-certified dermatologist.