It's great that you're seeing subtle results from your Sculptra treatments. When considering combining treatments like Sculptra (a poly-L-lactic acid filler that stimulates collagen production) and Radiesse (a calcium hydroxylapatite filler that provides immediate volume and stimulates collagen production), timing is crucial to achieve the best results and avoid complications such as overfilling or excessive puffiness. Given that you have had your last treatment of Sculptra three weeks ago, it's generally recommended to wait at least 4 to 6 weeks after the last Sculptra session before considering additional dermal fillers like Radiesse. This waiting period allows you to better assess the full effects of Sculptra, as it continues to stimulate collagen production and its effects become more noticeable over time. Here's why waiting is beneficial: 1. **Assessment of Results**: Sculptra works gradually, and its full effects can take several months to manifest. By waiting, you can better gauge how much volume and collagen production has been stimulated and avoid overfilling the area. 2. **Avoiding Complications**: Combining treatments too soon can lead to complications such as excessive puffiness or uneven results. Allowing time between treatments ensures that you can accurately determine the need for additional volume or contouring. 3. **Optimal Aesthetic Outcome**: A staged approach allows for a more tailored and precise enhancement, leading to a more natural and aesthetically pleasing result. Since you've already seen some subtle results from Sculptra, waiting another few weeks (totaling 6 weeks from your last Sculptra treatment) would be a prudent approach. This would mean waiting another 3 weeks from now before receiving Radiesse. However, individual responses can vary, so it's always best to have a detailed consultation with your treating physician. They can assess your current results, consider your aesthetic goals, and provide personalized advice on the appropriate timing for Radiesse injections. They may also take into account your skin type, overall health, and any previous reactions to treatments. In summary, a cautious approach would be to wait at least 6 weeks from your last Sculptra treatment before proceeding with Radiesse, but a consultation with your physician will give you the most accurate and personalized advice.