It has a thicker consistency, making it just right for filling in and adding a lot of volumes, especially in the buttock area. Depending on results you are wanting to achieve you may require more than one session. This is best discussed in consultation. After your Biostimulator treatment, you can expect slight redness, swelling, and bruising, but these side effects should subside within a few days. It is important to avoid strenuous activity and excessive sun exposure for at least 24 hours after the treatment.