What is the difference between lip fillers and hyaluronic acid? What difference it makes in lip augmentation?

The most common lip fillers that we use (Juvederm, Restylane, Belotero) are all hyaluronic acid (HA). There are other types of fillers, but my personal belief is that HA's are the best and safest that we have on the market right now. The reason being is that your skin is essentially comprised of collagen and hyaluronic acid. Therefore, you are really just putting back what you've lost from age or augmenting what you already have. If you are wondering why no one uses collagen anymore, it is because it does not last very long (4-6 weeks). You can expect HA's in the lip to last about 6-9 months. Additionally, if you change your mind and decide you do not like the result of your lip filling, hyaluronic acid can be melted away by injecting an enzyme to dissolve it immediately. 

 Hi, most of the newer dermal fillers, used for Lip Augmentation, are made of hyaluronic acid.  I prefer Restylane, Restylane Silk and Juvederm for Lip Augmentation when using a dermal filler.  We akso use lip implants for a more permenent lip enhancement.  Hope this helps.