What is in a moisturizer or face serum with hyaluronic acid in it? The age-old question that whirls in the earth today. Is it safe to put a moisturizer on the skin that has hyaluronic acid in it? Normally, throwing acid in someone’s face is not a wise eye idea. A Case in point, several decades ago a thriving model showcased some eye mascara. It dripped into her eyes and began to sting them. Her eyes started watering and burning. Her eyesight began to fade so she went to the eye doctor. The mascara had contained a deadly acid in it and the acid ate the eye tissue away and she went blind. This is the type of acid that is dangerous to allow it to touch human tissue of any kind. Now, that we got that out of the way hyaluronic acid is one of the safe types of acid that will help to regenerate and heal the skin not damage it.