I mistakenly used hydrogen peroxide as a facial cleanser today. It took me a while to realize that it was it. I wondered why the smell is very different than my usual cleanser. I remembered that I put a little amount of hydrogen peroxide in an empty facial cleanser bottle. It really smelled very stink. I prepared and brought it with me when we had our youth camp. It was just for first aid emergency use only. The thing was I did not put a label in it. I was so glad that it was not used but I suffered the dose of my own medicine. It is always necessary to put a label when you are putting some thing in a container. This one of the lessons to be learned.