Henna is an excellent home cure for headaches, particularly those caused by the sun. Hennaing your hair cools and soothes the scalp and personally, I have found it an excellent way to remove pain.
Henna is a medicinal plant. Its bark and seeds are used in Unani and Ayurvedic medicines. Henna is a middle-sized shrub with many branches. It yields small white or pinkish fragrant flowers in large terminal bunches and small round fruits.
The flowers of henna have been found to be very effective at curing headaches and migraines.
A simple home remedy is to dip henna flowers in vinegar and then rub them against the forehead for quick pain relief.