"SPIRULINA: COSMESI E NON SOLO" is a project conceived and developed by the 3D high school class of the Biotechnological course of I.I.S.S. Calamatta of Civitavecchia. The project, now at an advanced stage, has created a pilot photobioreactor, entirely made inside the school with 3Dprinted parts and a control system with sensors that use the Arduino platform. The main purpose of the photobioreactor is the biosynthesis of Spirulina, a blue-green, unicellular and photosynthetic microalgae, with a spiral and filamentous structure, with versatile virtues and characteristics already known in literature. Once the alga has been extracted from the culture bath and dried, after careful quantitative and qualitative investigations, the product is destined to become primarily an ingredient in cosmetics but also, in future developments, a precursor for modern Nutraceuticals.