It's very easy. Tinish Rosemary (metbesha kitel) be tinish wuha kekilew. The water will turn yellowish-green. - Wait some minutes endikezekiz ena atlilew. You want the water. - It's better if you have clean hair already. It's also easier to do it at night when you're back from work or school. - Tinish teb teb eyaregk yetsegur kodahin massage argew. You need to soak all of your scalp with it. - Yeterefewun bedemb kedneh lenege fridge wust askemtew. - Ke 1 se'at behuala wash your hair. - Don't use 1 week old rosemary water. It basically expires and smells weird so you have to boil a new one. Yes the difference was a little noticeable. My hair normally grows fast but after using rosemary water, my hair grew a lot denser and faster. This is the answer you're looking for, but I left this method a couple of years ago. Part two ⬇