According to Healthline, cold water is classed as water that has a water temperature of below 70F.
What are the benefits of washing your face with cold water?
For instance,cold waterwashing can help to prevent acne from occurring.

Additionally, “while hot water opens pores, cold water closes them,” the site notes.
Closing the pores prevent dirt and bacteria from entering them, which can help to prevent pimples.
For managing skin conditions like rosacea, cold water can also be highly beneficial.

Hotter water can cause more dilation of the blood vessels in the skin, making your skin look redder.