Take care to maintain your henna as long as possible.
Apply oil to the henna area before shower. You can bath and shower as usual. Avoid chlorine, salt water, dish soap, bleach, other cleaning materials, and any other harsh chemicals. Excess washing and friction from clothing will make the stain fade faster. The less you touch the area, the better. Wear gloves when washing dishes if the design is on your hand
Avoid using body lotion with lots of artificial fragrances.
Please remember, henna body art is not an exact science. Everyone stains differently due to countless variables. If you follow the above guidelines, your henna stain should last 1-3 weeks depending on body location and aftercare.