Yes
Yes. Hair is protein and breaks down slowly, especially in a warm pile.
VerdictYes
Breaks down inSeveral months to a year
Counts asProtein
Why
Hair is keratin, like feathers and wool. It contains nitrogen and breaks down, but it can take a long time. Hair from salon treatments or dyes adds chemicals you might not want.
Quick facts
| Carbon to nitrogen | About 5:1 |
|---|---|
| Hot pile | 6-12 months |
| Cold pile | 1-2 years |
| Worm bin | Sometimes · Add in small amounts, breaks down very slowly. |
| Bokashi | Yes · Acceptable in small quantities with regular waste. |
| City green bin | Usually accepted; check local rules. |
| Prep | Remove long strands or cut into smaller pieces. |
| Mix with | Mix well with carbon-rich brown materials. |
| Pest risk | Low · No significant pest attraction risk. |
How to compost human hair
- Collect clean hair from a brush or trimmings.
- Cut or tear it into small bits if you can.
- Mix it into the pile and turn it occasionally.
Watch out for
- Avoid hair treated with heavy dyes or chemical treatments.
- Hair can clump together, so mix it in well.
- Keep it out of the food compost if you grow vegetables and don't want residue.
Other ways to use human hair
- Mix hair into a pile of leaves to speed breakdown.
- Use hair in a birdhouse or for nesting material.
Common questions
Can I compost hair from the salon?
Yes, unless it's been heavily dyed or treated. Small amounts are fine.
Does hair add nitrogen?
A little. Hair is protein, so it adds nitrogen as it breaks down.
Can hair attract pests?
Not usually, unless it's in a large clump in a wet pile.
Is hair biodegradable?
Yes. Keratin breaks down over time.
Rules vary by town and by composting method. When in doubt, check with your local composting or waste program.