Personal Protective Equipment (PPE) is incredibly important for your health when using the paints we recommend with this kit. Any sort of sanding activity will create dust and microplastics you don’t want to inhale, and spraying any form of paint is just as hazardous.
Do your research into what PPE you need for your specific fillers and paints. This should be laid out in the Safety Data Sheet for the products you use alongside other control measures the manufacturers recommend.
Most should recommend using nitrile gloves and a face mask, at a minimum. We here at The Kig Atelier highly recommend the same when creating your kigurumi.