I was very sceptical at first as any serum ive tried, especially on my scalp, would often make my hair very greasy. I have very fine hair. Would often wash every second day as my scalp gets so oil and itchy after 1.5 days. But I gave this ago and I have not looked back. The only serum that helps getting rid of my itchiness. And gave me an extra day without washing. I couldn't believe it. And it smells amazing. The application makes it super easy to use on the hair.