So I'm thinking about doing a Terminator project, essentially a mask or special fx makeup. The problem I'm having is that I want to use some sort of ferro-fluid or ferro-fluid lookalike but it needs to be safe for long(ish) term skin contact. Or if there isn't really any I would need something that will stick to a base (eg plastic mask). Any ideas for materials I could use?
Update: I'm going to use the ferro-fluid as part of a mask (can be taken on and off) so is there any way to keep the ferro-fluid's (or something similar) form and attach it?