Thanks for sharing. This is a cream formulation containing Lactobacillus spp. These are considered not as a skin commensal, and they will have little or no effect in the underarms on odor development. If the effect is there, it will be short-lived. It has been tried before. Nonetheless the most formulations contain dead/inactive lactobacilli. They are added for marketing purposes, but have little/no effect. I do see an impact of the coconut oil: these contain mid-chain fatty acids that are very effective in killing bacteria. Best, Chris