The Eye Doctor can help melt the oils which block the tear glands and assist in better tear quality. You can use this twice a day for 2 weeks then once a day or as required. Can be reused again and again! It has a hygienic, removable, washable cover, an adjustment strap and storage pouch for dry, safe and clean storage. It is non toxic, non flammable and fully safety-tested for use in both the oven and microwave.