Yes the clay would help with bags (edema) where there is toxins causing dysunction leading to the trapping of fluids. Poor lymph flow is a big part of the picture. Remove the toxins alows the body burden to be released allowing homeostasis to once again occur. Anything that removes toxins is a major benifit to any negative physical condition. You could also place some clay on your face to help out.

Something to consider is to skin brush all lymph nodes and pathways so good flow is promoted. Along with this, rebounding is a phenomenal way to pump the lymph so stagnation doesn't occur. This then reduces conditions like inflammation, etc.

Very important as well is to drink lots of pure water cause dilution is a solution.

Of course a proper healthy Diet is key to the synergy of all of these above mentioned things.