Looking for a hair oil to add shine and help manage frizz? OUAI Hair Oil is a lightweight hair treatment designed for dry hair, frizz control, and smoother-looking ends. It may be an option to consider when building a simple hair-care routine. The product shown in the Amazon listing is the 1.5 fl oz (45 ml) size. The listing highlights shine, split-end care, and heat protection. What Is OUAI Hair Oil? OUAI Hair Oil is designed to help smooth the appearance of hair while adding shine. Hair oils can be useful for managing the look of dry lengths and ends, especially when hair feels rough or looks frizzy. Results can vary depending on your hair type, texture, and styling routine. How to Use Hair Oil in Your Routine 1. Start with a Small Amount Begin with a small amount and adjust as needed. Using too much can make fine hair look oily or weighed down. 2. Focus on Mid-Lengths and Ends Apply sparingly to the lengths and ends, where hair may look dry or frizzy. Avoid applying more than your h...