The formula for hydrosulfuric acid is H2S. This is used as one of the ingredients that can be found in fertilizers. This is also something that is commonly used for the manufacturing of various chemicals. Some can even use this in order to create pigments that can be used for putting on makeup or altering the overall color of your hair.
If you would check the ingredients of synthetic detergents, this is most likely to be one of the main ingredients that you will find. A lot of people are not aware that this can also be used in order to strengthen explosives and even to create drugs.