Sometimes customers ask why Hyaluronic Acid Watery Sun Gel doesn't have the silver foil seal. I understand customers have a concern about the stability of the product. If you have tried the Hyaluronic Acid Watery Sun Gel(or Hyaluronic Acid Natural Sun Cream) before, you might have seen the pointy outlet. We chose this pointy outlet to minimize the contact of the air with the content. And if you look at the lid of the product close, there also is a pointy pin inside. It gets into the pointy outlet to lock the product to protect it from leaking. In this way, the formula can be locked completely and kept stable. Just like a wine bottle and cork! As we have chosen this package design, we could reduce the use of silver foil for the environment. Plus, it is way easier to control the amount of sunscreen! When the weather gets hotter, sometimes the gel formula become more watery. So you won't have to waste product, since this outlet doesn't let too much product flow out. Whenever possible, we make the best decision for our customers and the environment. Please let us know your concern and don't hesitate to complain. We will explain or we will reflect it in the next product.