This is my new favorite hair product! I received the Bumble and bumble. Hairdresser's Invisible Oil Primer as a sample and loved it. After doing a little research, I decided to try this version when purchasing a full-size. I went back and forth...but I'm so glad I tried this one! I loved the primer, but I LOVE this oil! I have thin, fine hair that's fairly straight. I blow dry and use a flat iron on my hair daily. The impact of this product is noticeable after just one use: less frizz and flyaways, healthy shine and smoothness. A little goes a long way - I have shoulder-length hair, so I use two drops and rub it between my hands and run my fingers through my hair and that gets the job done, so this bottle will last a long time! Definitely splurge-worthy...the value is amazing!