I have playdough! And something gluey and lumpy, but all pink!
I did the traditional stovetop method. Word of caution though: Start with cold water and sift the flour!
The lumpy gluey stuff is probably the softer thus better option for a fine detail face impression, I can cope with oiling up my face so it doesn’t stick yeah??? But the lumps are making it less ideal.
The brighter smoother stuff is better fo actual dough.
Oh another hint. Probably boil the salt and water first to dissolve it fully, let cool and then sift in the flour and cream of tartar.
Sooo pressing face in dough before or after hair colouring…..? I think before…