These soap crayons are safe for children 3 years and older. 

To use wet soap and rub along area and wipe clean when done. If you have grout do a test before. Prolong use may temporaily of the hands. 

Ingredients Sorbitol, Sodium Cocoate, Propylene Glycol, Sodium Stearate, Water, Glycerin, CI 77019, CI 77891, CI 77491, CI 77742, CI 77007, CI 77288, CI 77499, CI 77742, CI 19140, CI42090, CI 74180, CI 15985, CI 16255, CI 44090, CI 15510, CI 45100, Polysorbate 80 & Liquid Germell Plus.