Please wear gloves to prevent chemicals such as detergent from burning your hands. The drugstore sells those thinner surgical gloves. Pay attention to the maintenance of hands at ordinary times, use hand cream frequently, and clean up dead skin on your hands. It is normal for hands to become rough when used frequently, and joints will become more directional with habitual actions. Exercise your hand's sensitivity after work. Hand fitness ball is a good choice. Pay attention to your posture at work. Generally, symptoms such as hand inflexibility and numbness are caused by compression of nerves in the cervical spine due to long-term incorrect posture.

Although you are in France, we still hope you will have a good life there. Come back if you are in trouble. Learn more there, don't just work, learn something you can use when you come back, you can learn French systematically, you can be a French teacher when you come back, and you don't have to wash dishes when you come back. Earn money slowly, don't tire yourself out, there are some valuable things you can choose to buy to earn some extra money.

I wish you a speedy recovery.