What is the recommended temperature for water used in hair washing?

Lukewarm water is recommended for hair washing because it effectively cleanses the scalp and hair without causing discomfort or damage. This temperature helps to open the cuticles of the hair, allowing for better penetration of shampoo and conditioner, which ensures thorough cleaning and conditioning. Lukewarm water also helps to balance the natural oils on the scalp, promoting healthy hair without stripping it of essential moisture.

Using hot water can lead to dryness and potential damage to both the hair and scalp, while cold water may not adequately remove oil and product buildup. Ice-cold water could cause discomfort and wouldn't provide the cleansing benefits needed during hair washing. Therefore, lukewarm water strikes the right balance for maintaining healthy hair while ensuring effective cleansing.