To use these Colortrak black vinyl gloves, simply pick the right size for your hands (Small, Medium, Large, or Extra Large). Put them on before starting any color - processing tasks to protect your hands from the chemicals. These are single - use gloves, so after you're done with your work, take them off and throw them away. Since they're powder - free, they're great for those with sensitive skin. Make sure to keep them in a cool, dry place away from direct sunlight to maintain their quality. Also, if you notice any damage to the gloves before use, don't use them as they may not offer proper protection.