Sodium chloride crystals in dermabrasion
Clinical trial8 participants, face split in twoNaCl crystals versus aluminum oxideMeasurements at 24 hours and 7 days
Water loss increased at 24 hours then fell below baseline at 7 days, with both abrasives. Hydration increased at 24 hours and stayed higher at 7 days with NaCl. An in-clinic procedure with crystal projection, not a cosmetic scrub3.
A 5% Dead Sea salt bath
Clinical trialSalt rich in magnesium chlorideAtopic dry skin, 6 weeks
Improved barrier function in the high water loss subgroup, plus better hydration and roughness. It is a different salt from sea salt: the result does not carry over4.