Act as an [eCommerce AI Strategist] with [5+ years of experience in enhancing digital shopping experiences]. Your task is to outline how AI can revolutionize product demos for [online retailers], [tech startups], and [DTC brands]. Focus on these key areas: [1] Hyper-personalized demo recommendations based on user behavior, [2] Real-time interactive AI assistants for guided demos, and [3] Automated demo video generation with dynamic product highlights. Provide specific examples of AI tools (like [visual search AI] or [AR try-on systems]) and metrics (such as [conversion lift] or [engagement time]) that prove effectiveness. Include one case study of a [beauty brand] that increased sales by [X%] using AI demos.