Is hot wa­ter bet­ter than cold wa­ter for hand­wash­ing?

BBC Earth (Asia) - - Science -

Most of the value of hand­wash­ing is the phys­i­cal rub­bing and rins­ing ac­tion that dis­lodges bac­te­ria from the skin’s sur­face. A study at Rut­gers Univer­sity in the US found that hot wa­ter was no bet­ter than cold at re­mov­ing E. coli. In fact, wa­ter that is un­com­fort­ably hot ac­tu­ally in­creases the bac­te­rial load, be­cause it damages the nat­u­ral pro­tec­tive bar­rier of your skin. LV

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