The instructions for using Santiveri Montalto 7.3 Golden Blonde 135ml hair dye are as follows: 1. Mix the contents of the dye tube with the developer in a non-metallic bowl. 2. Apply the mixture to dry, unwashed hair, making sure to cover all roots and strands. 3. Leave the dye on for the time indicated in the product instructions. 4. Rinse your hair with lukewarm water until the water runs clear. 5. Apply the conditioner included in the kit and leave it on for a few minutes. 6. Rinse again and dry your hair as usual.

Santiveri Montalto Hair Color 7.3 Golden Blonde 135ml is a hair product. However, the knowledge base does not contain specific information regarding precautions for this product. It is recommended to read the manufacturer's instructions or consult a pharmacist for accurate information on precautions and proper use of this product.