This one was a panel created on top of a code done by heveti on blenderartists.
The original thread is:
https://blenderartists.org/t/apply-lock-hair-particles-after-hair-dynamics-simulation/635938/11
This addon makes easier to sculpt the hair. With it you can apply dynamics on the hair, and freeze it.
You can download the addon at
https://carlosedubarreto.gumroad.com/l/joeyf