If you want a perm, there are cold perm, perm and water perm. What is the difference?

Perm and cold perm are different ways of perming, but the operation principle and process are quite different. I think each has its advantages and disadvantages. Let's talk about the advantages and disadvantages of cold perm and hot perm. ?

Cold perm: a perm method that does not completely set the curl effect by heating. Because of its simple operation, varied curling shape and obvious and lasting curling effect, it is very popular. The advantages are changeable shape, short perm time and thorough perm. The disadvantage is that the relative elasticity is not so good.

Generally, short hair will choose cold perm. The first cold perm needs to locate the hair roots, which can't be done by hot perm. The second kind of short hair generally does not need full curl and elasticity, but generally needs natural texture, which is more in line with these requirements.

The advantage of cold perm is that the hair roots can be ironed into smaller rolls, and because the arrangement of roll cores is more convenient, the barber's intention can be expressed more accurately. The disadvantage is that the elasticity will get better after washing hair, and it will be dry, and the curl will become bigger, which is not easy to shape. It is not easy to form moisturizing care in time. You must use moisturizing styling products to keep curl and shape.

The advantage of cold perm is simple operation, but the disadvantage is also obvious, that is, hair will get worse and dry.

Perm: including ceramic perm and digital perm, all belong to the category of perm. The method of perming curly hair by heating is collectively called perming. ?

Generally speaking, perm is more elastic than cold perm, easier to be molded, and easier to control than long and short perm. The disadvantage is that the curl is not soft enough, and the perm time is long, so it is difficult to perm the hair roots.

Perm is generally suitable for long hair and large curls.

There are many benefits of ironing, which is easier to take care of, and it can be naturally formed without deliberately using stereotypes. Hair has better luster and elasticity after perm. When wet or naturally dry, the curl and elasticity of hair will not change much, and the drier it is, the more curly it will be. The disadvantage is that it is not suitable for curling too small, and it is not suitable for hair styles with permanent roots. The arrangement and combination of winding cores have little change, and the winding shape is the best within three turns. The more curling circles, the worse the effect of the outer circle. So most perms are just tips.

Shui Piao is hydrogen drift, but it is called differently. This perm method originated in Japan, and it was first called water perm. Last year, this way of perming was very popular. This perm method is easy to operate and can be done in about an hour and a half. It does not need to soften or solidify. You can perm and dye first, or dye and perm first. It doesn't have much influence on each other. The biggest advantage is that the hair quality is basically the same before and after perm, and the curl is elastic, and the durability is the same as that of a normal perm.

Water rich in hydrogen and oxygen is sprayed on the hair, and the nursing hydrogen in the hydrogen water enters the hair, combines with the hydrogen bond of the hair, and releases a large amount of protein when heated. These protein will be molded into the shape of a barbell under the action of high temperature, and the oxygen in the water will expand at the gap of the hair, and the deformed hair will be fixed, and the hair will change from straight hair to curly hair. This process does not need to use traditional alkaline perm water and styling agent, also called physical perm.

From a professional point of view, cold perm only changes the arrangement and combination of disulfide bonds in hair, while perm not only changes disulfide bonds, but also shapes the protein in hydrogen bonds into a curling effect at high temperature, which enhances the elasticity and durability of curling. In terms of operation technology, cold stamping is simpler and hot stamping technology is more demanding. Scalding with water is the best and most time-saving.

Nowadays, hair salons generally recommend perm, which is better than cold perm. A perm with water will be more expensive. I think it depends on how you want to perm your hair. If you want to perm fluffy curly hair, it is recommended to perm it cold. If you like natural big waves and curls, you'd better choose a perm. If you had more money, boiling water would be nice!