I reordered 4 more rosemary essential oil bottles since I last purchased in Nov 2019. Because it works! I love the smell of it and use 2-3 drops every day in my shampoo. After lathering my hair I just leave it for a few minutes before washing. Sometimes I use it in my conditioner as well, vice versa. (For sensitive scalp users, please do a skin test first or use it with hair oil instead.) My hair is lushes and healthy now, before this I had hair loss. Plus, it is worth the price. Affordable, good quality and smells pleasant!