Prism is a sustainable custom nail polish system designed to eliminate waste and unlock creative freedom. The manual marker device uses five refillable cartridges (RGBWBL) to create any color on demand - no electricity, no connectivity, just precision mixing. Paired with an AI-driven app, users can match colors from photos, virtually try on shades, and generate scalable recipes. Available at Sephora, Ulta, and partnered salons, Prism replaces collections of drying polish with one adaptable tool. The platform includes community-driven tutorials and transparent sourcing education, with a closed-loop cartridge return program.