Is toner refilling safe?
The ‘ingredients’ of toner refill vary from supplier to supplier; so it’s impossible to give a definitive answer. However, it would be highly irresponsible (and a short sighted business strategy) for a manufacturer to sell a product that could prove hazardous to health. To avoid toner inhalation, wear a dust mask. Refill in a well-ventilated room, or better still; outside.