Look for products with the fewest ingredients. This will lower your chance of a reaction.
Do a patch test before using any product. Place a small amount on the inside of your elbow and wait 48 hours to 72 hours. If you have redness, swelling, itching, or burning, don't use that product.
Always apply fragrance to your clothes, not your skin. This can help reduce the risk of reaction to the fragrance. It can also reduce the risk of the fragrance interacting with ingredients in other products and causing a skin reaction.
Just because a label says something is "hypoallergenic," "dermatologist tested," "sensitivity tested," or "non-irritating," that's no guarantee that the products will be kind to your skin. Some companies do the testing, others don't. There are no rules about how these terms can be used on a label.