system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Everything has Sodium Laureth Sulfate in it. What's the real difference between hand soap, shampoo and body wash?
gpt
Sodium laureth sulfate is what is called a wetting agent. Together with various chemical compounds that break surface tension and make emulsions, it becomes very effective at making the soap bubbles and lather. The thing about hair and skin is that it is hydrophobic, so water can't really rinse off dirt and grime as easily by itself. Adding sodium laureth sulfate helps correct that problem. 

The differences between those soaps would be whatever main ingredients, additives and moisturizers they want. Sodium laureth sulfate is not the ingredient that determines what area of the body it is for. It just boosts the cleaning power of everything.