The invention relates to a fatty amide, which is based on: a) a diamine selected from aromatic or cycloaliphatic or linear C.sub.2 to C.sub.10 aliphatic diamines, b) a C.sub.3 to C.sub.12 lactam or amino acid, c) optionally, a second primary diamine different from said diamine a), d) a hydroxylated fatty monoacid, e) optionally, a nonhydroxylated monoacid chosen from linear C.sub.6 to C.sub.12 aliphatic acids,
with a mole ratio b/(a+c) of 0.25 to 3/1. The invention also covers a process for the preparation of said amide and its use as organogelator or rheology additive in an organic solvent medium, in particular in coating, glue or adhesive, mastic, sealant or stripping agent compositions or molding or cosmetic compositions.