A Refined Bugs Bunny Barber with Hare Tonic

Cinematic 8k hyper-true-to-life close-up shot. He is holding a bottle labeled "HARE TONIC" and pouring liquid onto the head of a sitting man. Man [photos reference including hair] has a worried and nervous expression, water dripping down his face. A 3D lifelike Bugs Bunny, faithful to his classic design but with detailed fur texture, wearing a white barber uniform. Retro barbershop background with a mirror. Dynamic lighting, high detail, photorealistic rendering style. Refine: name the rendering engine you want (Octane, Cycles, Unreal) for sharper output.