Why are there so many ingredients in shampoos? What are they for and are they actually safe?
In: Chemistry
There are 3 main components to most liquid household products:
The stuff that does the job (in this case the soap that provides a non polar surface to grab oils, while polar water grabs the rest).
The stuff that makes it liquid (almost always just water)
The stuff that keeps the stuff that does the job in the liquid instead of precipitating out (there are tons of things that this could be).
“Is it safe” depends. Its totally safe to put in your hair, but isn’t safe to eat (neither is a bar of soap). Water is unsafe if you have too much of it, so the context and use matters a lot.
There are strict regulatory bodies that ensure the safety of anything you are supposed to ingest (in the US it is the FDA (food and drug administration). And regulatory bodies on non consumable products that require safety labels to be put on all consumer products with instructions and risks.
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