The solution can keep for weeks or months in the fridge, so you can make enough of it in calm, safe conditions.Then all you need is to wear rubber gloves, and to use separate containers for your dyeing - not your cooking pots. No dye will escape in the air, even in the steam generated by simmering, and if you wipe spills promptly, it's easy to prevent newly dried powder from getting airborne in your kitchen. This is one of the things that makes acid dyes so friendly to apartment dwellers.