EpZen® Magnesium Bath Crystals (Relax) are pharmaceutical grade magnesium bath crystals infused with 100 per cent natural essential oils. Wonderful for the overworked, overburdened, tired or stressed, soaking in a warm bath with magnesium is known to assist with stress, sleep, calming the mind and re-energising the body. Beautifully scented with a 100 per cent natural essential oil blend of rosewood, ylang yalng, geranium, frankincense and may chang.