2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157769In this paper we give a partial answer to the problem which is about the regularity of Schutzenberger products in semigroups asked by Gallagher in his thesis [Problem 6.1.6]{Gallagher} and, also, we investigate the regularity for the new version of the Schutzenberger product which was defined in [Ates].8 pagesGroup TheoryCommutative Algebra20E05, 20L05, 20M05text