Mix Indian plum with a pinch of baking soda, crushing it to make a paste. Apply the paste to the prickly heat.
Consuming a lot of sugarcane juice or limejuice is also a very good remedy for prickly heat.
Having a bath with neem soap will keep the prickly heat away.
Sandalwood is a cooling herb, so it’s effective in removing excess heat from the body. Mix some sandalwood paste with equal amount of rose water and apply it on the prickly heat.