How does our skin work? Skin has a lot of different functions. It is a stable but flexible outer covering that acts as a barrier, protecting your body from harmful things in the outside world such as moisture, the cold and sun rays, as well as germs and toxic substances. Akemi Dark Spot Solution with Laser Treatment Set! The main function of skin is to act as a barrier between the inside of your body and the outside world. Your skin protects you from germs, keeps your body temperature stable, and helps you absorb vitamins and minerals. Your skin is made up of three main layers: the epidermis, dermis, and subcutis. Akemi Dark Spot Solution with Laser Treatment Set! OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.