The belief that hot water opens pores and cold water closes them is a common misconception that has been passed down through generations. However, the reality is that the temperature of the water has no effect on the size of our pores.

Pores are tiny openings on the surface of the skin that allow sweat and sebum to escape. They also allow products such as moisturizers and serums to penetrate the skin. The size of pores is largely determined by genetics, and they cannot be permanently changed by external factors.
However, there are some temporary factors that can affect the appearance of pores. For example, when the skin produces excess oil or when dead skin cells accumulate on the surface, the pores can become clogged, making them appear larger. This is why exfoliating regularly and using products that regulate oil production can help to minimize the appearance of pores.
When it comes to the effect of water temperature on pores, there is no scientific evidence to support the idea that hot water opens pores and cold water closes them. In fact, hot water can actually be damaging to the skin, particularly if it is excessively hot. This is because hot water can strip the skin of its natural oils, leaving it dry and irritated. It can also cause blood vessels to dilate, leading to redness and inflammation.
On the other hand, cold water can have a soothing and refreshing effect on the skin. It can help to reduce inflammation and redness, making it a good choice for those with sensitive or acne-prone skin. However, it does not have any effect on the size of pores.
So, while hot water may feel relaxing and cold water may be refreshing, neither temperature has any effect on the size of pores. The best way to keep pores looking their best is to follow a regular skincare routine that includes gentle cleansing, exfoliation, and moisturizing. It is also important to protect the skin from sun damage, as this can lead to premature aging and make pores appear more visible.
In conclusion, the idea that hot water opens pores and cold water closes them is a myth. Pore size is largely determined by genetics and cannot be permanently changed by external factors. Instead, focus on maintaining a regular skincare routine that includes gentle cleansing, exfoliation, and moisturizing. And remember, always protect your skin from sun damage to keep pores looking their best.