morning hair
The most reliable metric I’ve found yet to determine when one is overdue for a haircut is morning hair.
Normally I try to keep myself at around 2.4 kilocurls, which is below the legal limit, but as you can see above I am rapidly approaching a 7.0 kilocurl estimated level, which is potentially dangerous not only to my self but to others within striking distance.
Sigh. Haircut time again.