Tetrahedron is a privately held French company created in 2003. Tetrahedron’s goal is contributing to a healthy life by designing and developing new, safe, and active ingredients for cosmeceutical, nutritional, biomedical and therapeutical applications. These ingredients may be natural compounds, for which Tetrahedron develops new and sustainable synthesis processes. One example is L-ergothioneine, a rare amino-acid, produced in bulk quantities via a nature-inspired, biomimetic process, for Nutrition or Cosmetics. Moreover, Tetrahedron designs original molecules derived from natural compounds as proprietary compounds.