Holis is a collaborative life cycle assessment (LCA) SaaS platform empowering brands to quantify, improve and communicate the socio-environmental performance of all their products. By blending a didactic interface with AI tools, we enable non-experts to assess their entire catalogue and identify effective eco-design strategies in minutes and for a fraction of the cost, without compromising on rigour. From suppliers data collection to results integration in e-shops, numerous features are readily integrated, enabling brands to achieve up to 20% impact reduction per production with up to 12% net margin gains thanks to better sales. Praised by UNESCO and the French Environmental ministry, thousands of products have been improved in textile, food, materials, electronics and other industries. Compliant with French and European regulations, Holis guides its users towards responsible production and clear communication, to allow all consumers to make more sustainable choices.