Buying Henna Powder
You can easily buy henna powder from health store. It can also be available with herbal medicine retailer or sometimes even at grocery stores. Make sure it is chemical free, natural henna powder. Ask for assistance at the counter if your not sure, or read through the ingredients if it is a packed power container.
Prepare Thick Paste
You can take as much quantity of henna powder as much you think is enough for your hair. It will depend on the size of your hair. You can mix the powder with some herbs. Pour it into the hot water and stir it till you are sure that powder is mixed and has become a thick paste. Let the paste cool down to a temperature level that can be safely applied on the hair.
Apply Paste on Damp Hair
After you think that temperature has cooled down, you can apply henna paste on your hair. After completing the process, comb your hair so that the henna paste is through to all places, even tips of the hair. Do not apply henna on dry hair, it can get into the entire hair.
Take Time Before Rinsing
You should allow at least a couple of hours before rinsing the henna powder off your hair. You can use a cap or a cloth to cover your hair for that time or may leave it open. There is no major difference as far as impact of the henna powder is concerned.
Rinsing and Styling
You can rinse the henna paste off your hair and style the hair however you like it. Take some care while rinsing the powder off your hair, so that it does not get into your eyes or leave colouring on your face etc.