I’d prefer if an actual language was used instead of pseudocode.
Here’s a C/++ implementation of the hair washing algorithm:

char x = 0;
hair += WET;
wash: hair += SHAMPOO;
start_lather(&hair);
wait(120000);
do {
hair += WET;
} while(hair != hair – shampoo);
if(++x < 2 || hair != clean) {
goto wash; }
return;