In the title complex. {[Co(C10H8N2)(H2O)4](C11H10O5)}n. the unique CoII ion lies on an inversion center and is coordinated by two N atoms from two 4. 4′-bipyridine ligands and four O atoms from four water molecules in a slightly distorted octahedral coordination geometry. https://parisnaturalfoodes.shop/product-category/thinning-hair-treat-kit/