Product safety:Peel off the plastic tape and apply on clean, dry skin. The nipple covers are not made for longtime use. Do not leave on skin for more than 6 hours at a time. Washable and reusable – gently clean the nipple cover with soap and warm water after usage. WARNING: May cause skin irritation. If any signs of discomfort or rashes, remove immediately and do not use. Do not use on sensitive, sunburned and/or broken skin. The adhesive effect will be reduced by perspiration, as well as by moisturizers, perfume, and other skincare products. Not recommended under age 14.