Dandruff is also popularly known as Pityriasis simplex capillitii as well as scurf.
From the timesunion.com
Alex brushes men off like scurf.
From the guardian.co.uk
I am in a thread-like alley in the back end of the London borough of Enfield wading through a scurf of beer cans, chicken bones and oozing, unidentifiable things in knotted carrier bags.
From the guardian.co.uk
More examples
(botany) a covering that resembles scales or bran that covers some plant parts
Scale: a thin flake of dead epidermis shed from the surface of the skin
Pityriasis simplex capillitii (commonly known as "dandruff") is the shedding of dead skin cells from the scalp (not to be confused with a dry scalp). Dandruff is sometimes caused by frequent exposure to extreme heat and cold. ...
(Scurfing (towsport)) Scurfing is a form of water skiing that uses a surfboard or similar board instead of skis. The scurfer is towed behind a motorboat at planing speed with a tow rope similar to that of knee boarding and wakeboarding. ...
A skin disease; the flakes of skin that fall off as a result of a skin disease; any crust-like formations on the skin
To flake off, or the material which flakes off. Dross.