New Non-Toxic Temporary Hair Chalk Dye Soft Pastels Salon Show Party With Box yellow See what everyone's chalking about! This latest craze will have you bursting with color! Great for dress up, performance costumes, or a rockin' night on the town! Our chalks are non-toxic, temporary hair chalks that last 1-2 days maximum. WARNING: 1) Hair chalk may cause staining on fabrics and materials. 2) Despite our shipping precautions, due the brittle nature of this product some chalks may be cracked upon arrival. This does not affect the usability of this item.