Three types of filler — and why rheology matters more than brand. After 10 years in practice, I don’t choose filler by name. I choose it by behaviour. Rheology — how a filler flows, resists pressure, and integrates into tissue — determines your outcome. Here’s how I break it down: 1️⃣ High G’ (structural fillers) Firm, resistant, strong lifting capacity. Best for projection, jawline, chin, and deep structural support. 2️⃣ Medium G’ (balancing fillers) Flexible but supportive. Ideal for cheeks, c