The difference is in their main purpose and key ingredients:
Calm Sleep Balm: This is a magnesium-rich balm designed for physical regulation and deep relaxation. It works by absorbing through the skin to help gradually regulate magnesium levels, easing physical discomfort, growing pains, night wakes, and restlessness.
Sweet Dreams Roller: This is a diluted essential oil blend designed for emotional support and quick calming. It is a portable solution used to aromatically calm overstimulation, ease sleep regression, and support sleep transitions, especially when traveling or dealing with changes in routine.
In summary, use the Balm for deep, physical relief and use the Roller for quick, emotional calming and routine support. Best used together.