Henna Courses

Also known as Mehndi, these tattoos are not permanent and only last between one and two weeks — depending on your skin, the quality of the henna, and how often you wash the area.

The tattoo is applied in the form of a paste that looks like greenish chocolate frosting. It's made by grinding up dried leaves from the henna plant and is mixed with water, lemon, and essential oils.

After the paste dries, it's peeled or picked off after about 24 hours, and you're left with an orangey-brown tattoo that stains the first few layers of your skin. Henna tattoos, if done correctly and using all natural ingredients, are completely safe for your skin, your body, and, yes, even if you're pregnant.

However something to be aware of is there is a trend among some henna artists to apply something called black henna, which will stain your skin black instead of brown.

This type of henna is dangerous because it contains paraphenylenediamine (PPD), a hair dye. When applied to your skin, it may look like a real tattoo, but allergic reactions to PPD can cause blisters, open sores, and scarring.