It's pH-balanced so it won't disrupt the body's natural chemistry. Liquid is iso-osmolar, meaning it won't over hydrate sensitive tissues to the point of causing irritation or cause dryness by robbing the body of its natural moisture. 1.69 oz. 

pH Rating: 3.9 - 4.2

Osmolality Rating: 250 - 400 mOsm/kg

Ingredients: Purified Water, Hydroxyethylcellulose, Hyaluronic Acid, Propanediol, Lactic Acid, Xanthan Gum, Sodium Benzoate, Potassium Sorbate.