30% Glacial acetic acid is corrosive and harmful to the skin. Glacial acetic acid, also called acetic acid, is a kind of organic monovalent acid, which is the main component of vinegar. Acetic acid is weakly acidic, the concentration of more than 10% acetic acid is corrosive, 30% glacial acetic acid is easy to irritate and corrode the skin in direct contact with the skin, causing harm to the human skin, and in serious cases, it will lead to inflammation of the skin mucous membrane, eye burns and other cases. 30% glacial acetic acid is used as acidity regulator, acidifying agent, pickling agent use, can increase the fresh flavor. It is generally used in the production of compound seasonings, prepared vinegars, canned food, and cheese. You should not use 30% Glacial Acetic Acid directly on the skin on a daily basis to avoid damage to the skin. If skin irritation occurs, it should be discontinued in time, and those with severe irritation need to seek medical attention for clear diagnosis and treatment.