Hello, I worked up some ideas on the logo and the whole label using a scientific slant. The logo with the magnifying glass was an intriguing idea, so I started with that. The playing with the idea of the molecular composition of magnesium chloride the magnifying glass changed to a microscope. View the logo below:

The light blue background of the whole label is tessellated magnesium chloride salts as seen under a microscope. The white labels themselves have a lacework that runs through the chemical composition of magnesium sulfate, the periodic table of magnesium, etc. It is very faint and used to add depth to the label. If you want cleaner lines though, the "lacework" can be removed to leave a clean white background behind the lettering.
View the label below:

I do like your current label, it is clean and promotes a health product well. If you are interested after the contest has closed, contact me and I can insert the microscope into the current label. Happy travels! -Jenn