Henna last forever on tambourine or drum skins because they are not living skin and do not exfoliate.
I recommend letting the henna fall off naturally. Once the henna flake off, the dark orange-brown henna stain will be revealed. The henna stain will deepen over time.
The longer the henna paste stays on the tambourine, the darker the final stain will be. It can take up to 6 months to 1 year for the final color to develop. If you decide you want the paste off the tambourine, scrape the paste off with a credit card or something similar.
If you want to use the tambourine for home decor only, try not to touch it very much, because the henna is meant to flake off.
Material: Sheepskin drumhead or Synthetic skin, wooden ring and stainless steel wipes
Available sizes: 6" inches (about 15 cm), 8" inches (about 20 cm) or 10" inches (about 25 cm)
Height: about 1.8" inches (about 4.5 cm)
With a round hole of 2.5 cm diameter and 4 pairs of steel wipes