How Safe is Toluene in Hair Dye?

Why propene cation is more stable than propane cation? What mass of potassium benzoate trihydrate is needed to prepare one liter of a 0.125 molar solution of potassium benzoate? How many protons neutrons and electrons are in gadolinium? What are geometric structures composed of atoms or molecules in an orderly arrangement? Does overuse of chemical pesticides and fertilizer affect the nutrient cycle? How do you salt from an equation iron 3 hydroxide reacting with ammonium sulphate? When we put some ice in a glass we see some water droplets on its outer surface. From where and how they come? What do the molar masses of any two elements contain the same number of what? What is a space that contains few or no molecules? What is important step in the fueling process? What is the relationship between a compounds chemical bond type and its mass or density? Is alkaline acidic or basic? Is milk a homogeneous mixture or a compound or a heterogeneous mixture? What does color of pen means? Does food coloring spreads faster in milk or water? Is coal hard? What is the melting point of Montelukast sodium? It was never alive? What are the Components of sterling silver? Is mashing a potatoes to make mashed potatoes a chemical or physical reaction?

How Safe is Toluene in Hair Dye?