I left put 3 hours instead of one, and after the long rinsing required peeling pigments, I found that my last 2 layers of henna were gone! Obviously if the layers over the years as it is my case it has accumulated, do not expect to recover its natural color right away, but saw how henna is tough, it is a real victory!
I have had to deplore any drying, yet my very long hair were not damaged! Only the long rinsing could make them a little dry, but a drop of oil, and we talk about it no more.
Minor drawbacks:
- The smell of sulfur which remains present for 2 weeks, fading as the days anyway, and fortunately, but in the meantime: yuck!
- The difficulty of procuring. Amazon is good but hello postage from the US or the UK. There eBay.uk on sale but is often blocked for shipments in France ...: /
- The price, especially since we may need to make several applications to achieve a result that satisfies us. Personally I have not made one, but I plan to make a second or even a third in the coming months.