Learn Henna Basics

The most basic of the basic is Henna Powder and Lemon juice.

Be warned, mixtures can get a lot more interesting! Basically, you are adding an acid (in this case, citric acid) to the powder to draw out the dye. Additional steps would add an oil to carry that dye into your skin.

Everyone's recipe varies! I think it depends upon the application. If you making a batch of henna for a fair or you plan to use it on multiple people, you will want to use ingredients that have a lower chance of causing an allergic reaction. For example, many people like to use Eucalyptus oil while others may find it too harsh and choose to leave it out or substitute with weaker oil. Cajeput and Tea Tree are common substitutes.
Another common variant is sugar. The addiction of sugar or sucralose gives the paste a stringy texture that helps the artist to lay longer, finer lines.
You can find a crazy list of henna artists' recipes here:

http://www.hennapage.com/henna/how/witchbrew.html

I love the mixture used in the videos below!
1. Henna Powder
2. Coffee
3. Cinnamon Sticks
4. Black Pepper Corns
5. Cumin Seeds
6. Ground Cloves
7. Lemon Juice
8. Tea Tree Oil

Henna can be applied with just about anything. Most common are the small mylar cones or the syringes (not needles, just the tube!). However, you could surely use a paintbrush or even a stick.
Some artists have found that it is easier for them to actually sketch the pattern onto the body using a watercolor pencil before the actual Henna application. Personally, I think this is a neat idea!

When you have finished your masterpiece, allow the paste to dry and flake off on its own. Avoid the dire need to scratch at it! The longer you can leave it on, the deeper the stain will be.
To prolong the life of your tattoo, cover with a vegetable oil or balm before getting into the shower or pool.

Leftover Henna paste can survive in a cool dark place or a refrigerator for a short time.

You will see warnings on just about ever henna site or store. There is no such thing as Black Henna. Products advertised as black henna most likely contain a chemical called PPD. This chemical can also be found in certain hair dyes and is a terrible skin irritant. I do not advise experimenting with any products claiming to be Black Henna.

Henna is a wonderful art that has brought people together for centuries! It can be used to theme a party or to teach children hands-on history. Whatever the function, stay safe and have fun!