What it does: Filterbaby uses a three-step filtration system to remove contaminants as small as 0.000001mm that can irritate the skin barrier. Step 2 uses a coconut-shell–based carbon filter to remove and dis Filterbaby uses a three-step filtration system to remove contaminants as small as 0.000001mm that can irritate the skin barrier.solve chlorine, radon and other contaminants.