One of the most commonly used fillers that Dr. Schwarzburg prefers to use at his medspa in NYC is Allergan’s Juvederm Voluma and Teosyal’s RHA 4, as they are the densest and the most rigid fillers available on the market. Dr. Schwarzburg advises against using softer fillers such as Restylane Kysse, as they are softer, more subtle fillers without the ability to withstand high internal pressure loads. Depending on the original shape and anatomy of the patient’s lips, Dr. Schwarzburg custom selects the filler that he finds most appropriate for each individual.