The difference between the cold wind and hot wind of the hairdryer's role

The cold wind of a hairdryer is blown from the barrel by a fan pumped into the external air; the hot wind of a hairdryer is a small resistance wire inside the hairdryer is electrically heated, and the air pumped into the external air by the fan through the resistance wire is blown from the barrel by the wind heated into a hot wind. Hair drying does not depend on the temperature of the hair, but also on the size of the air volume. So try to choose some of the air volume of the hair dryer, but blowing hot air and blowing cold air and there is no significant difference, should pay attention to the cold weather when blowing hair as much as possible do not blow cold air, easy to catch a cold. Blowing hot air should be diligent to move the position of the air outlet, do not keep blowing the hair in one direction, which will damage the hair. When blowing hair, it is best to blow the hair to half dry, and then natural air dry, so that the damage to the hair is minimized.

Hairdryer:

A hair dryer is a combination of a set of electric filaments and a small high-rotation fan. When energized, the electric filaments generate heat, and the wind blown by the fan passes through the electric filaments and becomes hot air. If only the small fan rotates and the filament is not hot, then the wind blown is just wind and not hot. Hairdryer blowing out the wind belongs to the dry wind, if used for too long, it is easy to cause the loss of moisture, resulting in thermal damage, to minimize the damage of the secret is: use a towel to pat dry the moisture on the hair first, gently combing the hair with the hand, and then use the hair dryer.