Taking a cold shower vs a hot shower is much better for your skin and helps to open up pores in your skin as well as tighten your cubicles and even pores.
Hot water also dries out your skin where as cold water keeps your skin moist.
Cold water also refines both your hair and skin and gives your hair a more shiny look as well as your skin.
However I cannot stand to take a cold shower unless it's on a very hot day and then it feels good but there's no way I could take cold showers in the winter months as I get too cold even stepping out of a hot shower.