Discussions tagged with 'zno' AleH Balm with ZnO turning blue/gray AleH replied 3 years, 10 months ago 3 Members · 3 Replies Formulating DrArlen zno and ph in a lotion DrArlen replied 4 years, 11 months ago 3 Members · 3 Replies Advanced Questions Viewing 1 - 2 of 2 discussions