Table of Contents
Ingrown hairs form when shaved hair regrows sideways into skin causing red bumps.
Close shaving leaves sharp tips that pierce follicles and trigger inflammation.
Curly hair, dead skin buildup, and friction increase risk.
They appear as tender red bumps with dark spots on beard, bikini line, underarms, legs.
Most heal alone but see a doctor for spreading redness, severe pain, or scarring.
Question | Answer |
|---|---|
What causes ingrown hairs? | Shaving leaves sharp hair tips that pierce skin when regrowing. |
Who gets them most? | People with curly or coarse hair face highest risk. |
Where do they appear? | Common sites include beard, neck, bikini line, underarms, and legs. |
What do they look like? | They appear as red bumps that are tender, itchy, or pus-filled. |
When see a doctor? | Seek help for spreading redness, severe pain, recurrent infections, or scarring. |
Ingrown hairs happen when hair grows back into your skin after shaving.
How shaving creates ingrown hairs
Shaving cuts hair at skin level leaving a sharp tip. When hair regrows this tip turns sideways and pierces adjacent skin. Your body treats the trapped hair as foreign material triggering inflammation and red bumps.
Risk factors
Hair type | Curly/coarse hair curls back easily |
|---|---|
Shaving method | Close shaving creates sharper tips |
Skin buildup | Dead cells block follicle openings |
Friction | Tight clothing presses hair into skin |
Appearance
Ingrown hairs show as red raised bumps. You might see a dark spot where hair sits trapped. They feel tender or itchy. Some develop pus-filled tops. Dark spots can remain after healing.
Common locations
- Beard and neck
- Bikini line and pubic area
- Underarms
- Lower legs
High-risk groups
People with curly or coarse hair face highest risk. Black males ages 14-25 experience them frequently. Anyone who shaves waxes or plucks can develop them.
When to see a doctor
Most resolve on their own. Seek medical help for spreading redness severe pain or recurrent infections. Chronic ingrown hairs cause scarring or permanent dark marks.