I understand the confusion. Unfortunately, with illegal or non-regulated buttock injections, there often is *no standardized technique*, which is one reason complications can become so unpredictable and dangerous. In different cases, injected materials may end up: * within the subcutaneous fat* between tissue planes* around fascia* inside connective tissue* near lymphatic channels* and sometimes even within or beneath muscle planes depending on: * who performed the injections* what material was used* injection depth* injection pressure* volume injected* and the injector’s level of experience or lack of training One important thing to understand is that large-volume free silicone injections are fundamentally different from controlled surgical implants or modern fat transfer procedures. When material is injected deeply or under pressure, it may potentially: * migrate through tissue planes* enter blood vessels* spread into the lower back, hips, or legs* or trigger chronic inflammatory reactions which is why some patients later develop: * granulomas* fibrosis* nerve pain* cellulitis* migration* tissue hardening* or systemic complications. Another major issue is that many patients never truly know what was injected. In illegal procedures, substances may include: * silicone* hydrogel* PMMA* oils* industrial compounds* or mixed unknown materials and the placement technique itself is often inconsistent. In modern gluteal fat grafting (BBL), by contrast, surgeons follow much stricter anatomical and safety protocols regarding: * injection plane* cannula control* ultrasound guidance* and avoidance of dangerous deep structures. The reason there is so much confusion among patients is because illegal injection practices are not standardized medical procedures. Two people may both say they had “silicone shots,” while: * completely different materials were used* different tissue planes were injected* and vastly different risks were created. The most important thing to understand is that the danger is not only *what* is injected — but also *where* and *how* it is injected.