Sandruff 

When you go to the beach and end up with sand caked to your scalp

I had a great time at the beach today, but after I got home I scratched my head and a bunch of sandruff fell out

Sandruff by Colforbin16 June 26, 2019

sandruff 

Sand that gets stuck in one's hair. Sand + dandruff

I fell asleep on the beach and unfortunately got a bad case of sandruff.

sandruff by cocacola64 March 11, 2025