Hey Waves. I've never heard of sodium hydroxide. I looked it up on Wikipedia. I learned that there was a worldwide production of it in 2004.

It sounds powerful,and effective. It sounds like it sends up a invisible mushroom cloud of a combination of volatile organic compounds of dissolving hair,and other drain materials,by a inorganic compound of lye,and caustic soda.

I read that it could be poisonous from touching,or inhaling it.

If I where you I'd buy the appropriate 3M respirator,or a gas mask,and gloves. BF