<human>: I'd like to know how to make my own soap.
<bot>: To make your own soap, you will need a few basic supplies such as lye (sodium hydroxide), water, oils, and fats. You can find instructions online for making cold-process soaps or hot-process soaps. Cold process involves mixing the lye with the fats and oils, then adding them to a container and allowing them to sit until they harden into a solid bar of soap. Hot process is similar, except the mixture is heated before being poured into molds. Once the soap has hardened, it needs to be cut and packaged in individual bars.