I have Mast Cell Activation Syndrome, and I tend to react to basically everything under the sun, including the sun! For a while, I could only use sodium bicarbonate to wash myself, because everything else caused my skin to break into hives. Micellar water (this one, and the regular version from Garnier that is not for waterproof makeup) is one of the very few skin cleansing products that I can safely use and perfectly tolerate. Like any other product, discontinue using if you suffer from an allergic reaction. But, in the absence of allergic reaction (a near miracle, in my case!), I can say that this has been a very gentle skin cleanser for me that doesn't burn my ultra-sensitive skin, or cause it to break out.