Pysanka Eggshell dyes are not to be used on boiled eggs!
General handling of all dye powders
Our dyes are industrial strength egg art dyes that are safe to use when handled with caution. Because these concentrated powders can become easily airborne, all powdered dyes should be handled with the following safety precautions:
Avoid contact with eyes and skin. Gloves and eye protection recommended.
Do not inhale. N95 masks are recommended.
Do not ingest. Acid dyes are not food grade.
Do not prepare dyes near open food or drink.
Keep away from children and pets.
For arts and crafts purposes only, not food grade.
Due to these concerns, NIOSH suggests preventative measures for those working with acid pysanka dyes, such as protecting the skin with gloves, eyes with eyewear and providing appropriate ventilation while also wearing a N95 mask.