Floral Dye in 3 variations is non toxic and non hazardous. Floral aerosol spray dye, as one of the 3, is not scent free. It is to be used outside for ventilation & cold winter seasons of the year do not accomodate a bulk amount of spraying outside. The dye is also messy for inside ventilated areas. All 3 variations have vibrant and very unique and bright colours.