The Insulating Thermal Cap is indispensable for a HennaBrownie color treatment.
After you have used the Henna and wrapped your head with foil with a headband to prevent leaks, you put on the sustainable heat cap. This heat cap provides a heat effect. Aluminum foil on the inside of the hat retains the heat that is essential for good Henna colouring.
If you are more than 50 percent gray, we recommend a heat cap. An Amsterdam sewing workshop makes the heat hats that are available in various colours in one size.
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