Clear plastic is difficult because it reflects everything around it. A good approach is bright-field lighting: place a bright white background behind the bottle, while keeping the surroundings dark or carefully controlled so the bottle gets clean edge definition without random reflections.

A full light tent can also help. Put multiple soft lights outside the tent so the bottle only reflects the controlled surfaces of the tent rather than the room. Even the camera opening can show up in reflections, so a custom tent or extra draping around the shooting hole may be needed.

Key points:

• Use a bright white background behind the bottle.
• Control everything the bottle can reflect.
• Surround it with soft, diffused light using a tent or drapes.
• Use black non-reflective drapes or plenty of space to keep unwanted reflections out.

If you don’t have a studio or enough room to separate the bottle from reflective surroundings, getting a truly clean result will be hard. Some retouching may still be needed to clean up remaining reflection patches.