It is simply Radiesse that is diluted with saline and lidocaine. To be considered hyperdiluted, the ratio between the Radiesse and saline and Lidocaine solution has to be more than 1:2. What's great about the combo of these substances is that the practitioner can completely customize them to achieve your goals, and they can be adjusted for your skin's thickness. The dilution ratio can go all the way up to 1:6.