Which one is more harmful to hair, cold perm or hot perm

Cold perm and hot perm are both common perm methods. For example, hot perm includes thermoplastic perm and ionic perm, while cold perm includes paper perm, fireworks perm, etc. These are all popular perm methods and are welcomed by many girls. Generally speaking, whether it is cold perm or hot perm, if handled improperly, it will cause relatively great harm to the hair. Especially heat, the harm will be greater.

Which is more harmful to hair? Cold perm or hot perm

Whether it is cold perm or hot perm, it will cause a large loss of moisture and protein in the hair, making the hair lack elasticity and toughness, and become dry and frizzy. However, since hot perm requires high temperature to reshape the hairstyle, it is relatively more harmful to the hair quality.

Is cold perm better or hot perm better?

In terms of damage to hair quality, cold perm is better than hot perm. In addition to damaging the hair cuticles, it requires high temperature for styling, and improper operation may also burn the hair. If you want to protect your hair, it is best to choose cold perm.

In terms of curling effect, hot perm needs to change the hair structure. In addition to disulfide bonds, hydrogen bonds also play an important role. While thermoplasticization reshapes the disulfide bonds, it also reshapes the hydrogen bonds of the hair by heating, which makes the hair curlier relatively speaking.

In terms of ease of care, hot perm is better than cold perm. After the hair is dry, the curl degree is only 30%, so you need to spray moisturizing water frequently to maintain the hairstyle. After the hair is dry, hot perm can maintain 70% of the curls, so it is better to choose hot perm in terms of ease of care.

It is better to choose hot perm for those with hard hair. Cold perm depends largely on the hair quality. Fine or poor hair can easily become straight after cold perm, while coarse and hard hair is not easy to curl. After thermoforming, the hydrogen bonds of the hair are reshaped, thus changing the properties of the hair. People with harder hair often need to use thermoforming to curl their hair.

Therefore, if you master it well, neither cold perm nor hot perm will damage your hair, but if you don’t master it well, both perm methods will damage your hair. Perming is a highly technical service that requires the operator to understand the principles of perming and know how to operate it to minimize damage and make the curls healthy and long-lasting. These all require professional training, learning, practice and continuous summarization. It is not what everyone understands, that perming and dyeing are done by assistants, and hair cutting is done by the master!