Every filler is designed for a certain area and has several different properties for example, in the lips a dermal filler with a high elasticity will be used like, Revolax Deep, Juvederm Ultra Smile, Teyosal Kiss and Restylane Kysse. For areas like the cheeks/chin/nose& jaw, a filler with more structure is used, one that doesn’t move as much and can be built on top of its self like Revolax Sub Q, Restylane Lyft, Juvederm Ultra 4. For Tear trough there is only one licensed dermal filler in the UK which is Teyosal Redensity 2, this is because it absorbs water at a much slower pace so doesn’t create bags and lumps due to the skin being so thin under the eye, this filler also doesn’t give the Tyndall effect which every other filler currently on the market would.