Serum Bottle with Glass Dropper and Light Caustics

Studio product photograph of a [Product] — a glass serum bottle with a dropper — standing on a wet [Surface color] stone surface. A single drop hangs from the dropper tip, mid-fall, catching light. Hard directional sunlight from the upper left casts crisp caustic light patterns through the glass onto the surface. Background is a soft [Background color] gradient with shallow depth of field. The label is sharp and readable. Shot on a 100mm macro lens at f/5.6, ISO 100, colour-accurate, no colour cast. Ultra-detailed glass refraction, realistic liquid, clean commercial retouching.