Is ritual purity required for applying henna to the head, or is it not required? And does henna prevent water from reaching the skin?

Question:
Is ritual purity required for applying henna to the head, or is it not required? And does henna prevent water from reaching the skin?

Answer:
Using henna is a desirable matter, and there is nothing wrong with it, because it is part of her beauty. It is not required that she apply it while in a state of ritual purity. When performing ritual purity, if the henna prevents water from reaching the hair, it prevents the wetness of the wiping from reaching the hair. In that case, she removes this thick layer, removes the henna, and wipes over her head. Likewise, if she wants to perform the full ritual bath for major ritual impurity, or for menstruation or post-natal bleeding, she must ensure the water reaches the hair and remove whatever henna or other substance is preventing it. Yes. May Allah reward you with good and do you good.