This is a common question asked by many patients everyday. Which filler is the best for me? Most of the fillers on the market are made of hyaluronic acid, a carbohydrate polymer that is found extensively in joints, neural tissue and especially the skin. When hyaluronic acid is injected it can be used to correct facial hollows, minimize wrinkles, and augment desirable features such as the cheeks and the lips. The choice of a hyaluronic acid filler, such as Restylane of Juvederm, depends on the area to be injected and the specific needs of the patient. Differences in the manufacturing process affect the properties of each filler - how much water they bind, their cohesiveness, their relative 'hardness'', the forced needed to inject them, their durability and how they reflect light from the skin. I prefer Restylane for the under eye hollow because the product is less likely to imbibe too much water and cause puffiness. Around the mouth area I like the "water loving" nature of Juvederm and its relative smoothness. Ultimately the choice of a filler comes down to the preference and experience of your provider.