Answer: You will find to be the best quality henna paste when it is fresh. If you make your own paste, you know the freshness. Otherwise, ask the vendor the following questions:
1. When the henna paste was prepared
2. Which crop
3. What ingredients are used
If the paste is made anything more than a week before your use, the quality will not be the best. If the vendor cannot tell you which crop the henna powder came from, chances are quality will be low. The best crop to use would be the latest harvest of the same year. If the vendor cannot tell you which ingredients are used, chances are he/she did not prepare the paste. Paste quality can also depend on whether only water was used, or a combination of lemon juice and essential oils.