If you are over 35, like most women, you are probably starting to see tiny lines around your eyes, lips and other areas of your face that are distressing to you. Even though you still feel vibrant and youthful, you may feel that your face is starting to betray you. Before getting a med spa service, such as a dermal filler, it is important that you learn a bit more about how it works, and most importantly, how long you can expect it to last. What Is a Dermal Filler? If you are searching for a med spa in San Diego, our office offers many different types of dermal fillers, such as Botox, Dysport and Xeomin. These prescription medications work by being injected into the muscles underneath the fine lines, folds and deep wrinkles caused by frequent facial expressions. The medication blocks impulses that are sent via the nerves, thus allowing the muscle to relax. This results in a smoother, more youthful appearance in the skin. The results of the injections generally last about four months.