Share 'Share your henna experience...'

Have you used henna before? If you haven't - what's stopping you? The mess, the time? If you have - what was the best thing about the experience and what was the worst? For me, I hadn't used henna for years as I was sure where to buy it from. However since I started using it again, I won't go back. I've had loads of compliments on my henna-dyed hair, the colour and the condition. My fav par...