Most people get this wrong and use hot water for all handwashing. Here's the right water temperature for effective handwashing.

When it comes to handwashing, it's a common misconception that hotter water equates to cleaner hands. However, studies and health organizations, including the Centers for Disease Control and Prevention (CDC), have debunked this myth, affirming that the temperature of the water doesn't necessarily improve hygiene. In fact, using water that's too hot can damage the skin, leading to cracks and infections. Understanding the right water temperature for effective handwashing is not only important for personal health but also for conserving energy and protecting the skin.

It has been a long-held belief that washing hands with hot water kills more germs. The truth is that the temperature necessary to kill most germs is far beyond what our skin can tolerate. Therefore, the primary goal of handwashing should be to physically remove germs and dirt from the skin, rather than to kill them. This can effectively be done with water at a comfortable temperature. Let's look at the correct practices for handwashing:

The optimal temperature is one that is most comfortable to the user, typically lukewarm. Water that is too hot can lead to skin irritation and is more likely to cause dryness and cracking, especially in the winter months, leading to dermatitis or other skin issues. Lukewarm water can also encourage people to wash their hands more frequently because it is more pleasant to use.

Regardless of the temperature, it's essential to use soap and lather thoroughly for at least 20 seconds—the recommended duration to effectively remove germs and dirt. This includes scrubbing all parts of the hands, including the backs, between the fingers, and under the nails.

Proper rinsing helps to carry away any loosened germs. Following the rinse, it's crucial to dry hands thoroughly with a clean towel. Damp hands can transfer germs more easily than dry hands, so this step should not be overlooked.

It is also advisable to use a moisturizer after handwashing to help maintain the skin's protective barrier, especially when washing frequently. This can reduce the risk of skin damage that might otherwise occur with repeated handwashing.

Using cooler water for handwashing can result in substantial energy savings since heating water accounts for a significant portion of home energy use. By simply switching to lukewarm or cold water, individuals can reduce their energy consumption and contribute positively to environmental conservancy.

In summary, while washing hands is a cornerstone of good hygiene, the notion that the water must be hot is inaccurate. By washing with a comfortable, lukewarm temperature, individuals can maintain effective hand hygiene without compromising skin health or wasting energy. Remembering these guidelines can lead to better handwashing practises that promote health and sustainability.