How to fix fake looking in bottle 3D models?

To fix fake-looking bottle 3D models, refine material realism, adjust lighting, and add subtle physical details. Focus on glass properties—tweak transparency (avoid over-clear or foggy) and use accurate IOR (around 1.5 for standard glass) to mimic light bending. Add tiny flaws like minor scratches, dust, or label edge texture to avoid "perfect" plastic-like surfaces. Use soft, diffused lighting instead of harsh spots to create natural reflections. If you’re starting out, reference real bottle photos while adjusting shader settings (e.g., in Blender or Keyshot)—start simple and add small, realistic imperfections gradually to make the model feel authentic.