What is the purpose of a faucet aerator?

The purpose of a faucet aerator is to regulate and control the flow of water from the faucet while also reducing water usage. It does this by mixing air into the water stream, which helps to create a steady, even flow while using less water overall. Additionally, faucet aerators can help prevent splashing and minimize the amount of water that comes out at high pressure, making them more efficient and environmentally friendly.