The Public Goods Hair Oil is a cruelty-free, vegan product made with natural ingredients. Izzy, the reviewer, demonstrates how to use it by applying a drop to her hands and then distributing it throughout her hair. She praises the pleasant scent and considers it a great option for those in search of a quality hair oil. Overall, the Public Goods Hair Oil offers a promising solution for nourishing and enhancing hair without the use of harmful ingredients.