The role of zinc in acne and prevention of resistance: have we missed the "base" effect?

where the use of oral zinc sul-fate was not associated with significant improvement inrosacea severity over a 90-day trial is contrary to existingliterature, though this can be explained by the differencein population race/ethnicity and dietary conditions. Wefeel that the issue of the effects of zinc in acne vulgarisand rosacea should focus on the preparation of zinc used.The available preparations include zinc acetate, zinc octo-ate, zinc citrate, zinc picolinate, zinc ascorbate, zinc glu-conate, and methionine-bound zinc.