Using both topical and oral magnesium as part of a daily regime is a great way to treat and prevent magnesium deficiency. Some people find they get the best relief from their symptoms when they double-up on magnesium.
There is further no reason to avoid using both. Your body regulates the amount of magnesium it absorbs through the skin, so there’s no risk of applying too much topically.
If you are sensitive to the gentle laxative effect of Natural Calm Magnesium Citrate Powder, simply use less of the powder and more of the topical magnesium.