Difference Between Hot Blanch and Cold Blanch The difference between Cold Blanch and Hot Blanch

1. A big difference between cold perm and hot stamping lies in the operating procedure. Perm to curl the hair through the heated curl, this process can be given a popular example, an iron bar we may deform through external force, but the effect of deformation is more difficult, but this iron bar we first heat to make it melt (equivalent to the hair is softened, the curl is heated) and then through the mold (equivalent to the shape of the curl) can change its physical shape to a greater extent, different physical shapes will bring different shapes to the hair. Let's learn about the different shapes of different hair cross-sections, straight hair has a round cross-section, wavy hair is slightly flattened oval, and curly hair is narrow and flattened.

That is, the difference between cold perm and hot perm is that hot perm can not only change the arrangement of the disulfide strings inside the hair, but also change the physical shape of the hair better than cold perm. Every hairstylist also knows that using an electric rod to perm without a potion, the electric rod alone can also temporarily turn the hair into curls, but the softened hair without the potion will soon regain its vitality. Perming works in a two-pronged way, changing the inside of the hair and changing the shape of the cross-sectional hair, which is why permed hair can better maintain curl.

Off topic: Straightening itself should belong to the category of hot blanching, and its mode of action is very similar to hot blanching.

2. The main ingredients of the medicinal solution (softener and setting agent) used in cold perm and hot perm are basically the same, and the principle of these two perms is basically the same, which is to "cut" the disulfide string (hydrogen bond and salt bond) inside the hair through the softener, that is, the so-called softening, and then use the styling agent to reorganize the cut disulfide string. Perm often has more antiheat and hair nutrition supplements in the potion, why do you need these medicines, I think everyone understands that the damage of the perm to the hair is relatively large, and the damage of the perm to the hair is "better". However, the presence of these potions (e.g., antipyretics) does not affect the homogeneity of the principles of cold and hot blanching.

That's why some people say that blanching can also be done with blanching potions.

As for what hairstyle and what kind of perm is suitable, you can go to the barber shop and see what they say, combined with the above 2 points, I believe you should have the answer.

Cold perm is to achieve the consequences of perming by heating the cap, using the heating cap as the medium to set the shape, and the hot perm is to wrap the hair on the curl bar, and directly heat the curl bar to achieve the purpose of styling, compared with the two, the effect of cold perm is not as good as hot perm, but relatively speaking, hot perm hurts the hair, if your hair quality is not very good, it is recommended that you do not choose hot perm, and you should do more nutrition for your hair after perming, so that you will have a beautiful hair

The cold perm** is much cheaper now.

And I personally recommend that you use a hot stamp.

Downstairs is completely reversed.

I've done cold and hot blanms later.

Cold perm is after each shampoo and drying.

If you don't take care of your hair in time, it's like those dead grass.

Blanching is different.

No need to take care of it at all.

And if you take care of it, it will be better than if it doesn't come out naturally.

So now a lot of places are doing hot scalding.

Hot blanching lasts much longer than cold blanching.

I make a hot blanch.

Out of the hair is long.

Other hot perms of the hair have been unchanged.

1. The hair quality is different.

The cold perm agent changes 70%-80% of the hair's chain bonds, and the hair needs to be moisturized to fully show the curl after perming. If it is dry, 20%-30% of the chain will be reverted to straight hair. Therefore, in the later stage, you need to rub elastin or gel and other styling products to assist in moisturizing.

Perm can change the hair's second-flow bond by 100%, and it takes dry hair to show elastic curl. However, the consolidation period is within 15 days after ironing, so it is best to use a styling product that increases elasticity.

2. The process is different.

Cold stamping: plasticity - softening - shaping.

Blanching: softening - plasticity - shaping.

When cold scalding, if the room temperature does not reach 15 degrees, we can properly heat the outside, and the temperature is controlled below 40 degrees. Because excessive heating will cause excessive loss of protein in the hair, the curl of the perm will be inelastic.

The hot perm must be heated to reorganize the memory of the severed secondary chemical bond in the hair, and this chain bond must be between 100 degrees and 140 degrees to produce memory reorganization, so the heating temperature should be controlled between 100 degrees and 140 degrees, and the moisture should be dried.

3. Different hair types.

Cold perm is a perm method in which the cuticle is opened, and the effect is good after healthy perming. The texture of damaged hair may appear loose and frizzy, and even hair breakage.

Hot perm is a perm method in which the cuticle is closed, which was originally created for damaged hair, which can maximize the internal nutrition of the hair strand and reduce the damage to the hair.

One. The degree of softening is different

The cold perm agent can only change the chain structure by 70%-80%, and the effect after perming is in the wet hair state, the flower shape is curled, and after natural drying, 20%-30% of the chain structure is restored to straight hair.

When the hot blanching agent is softened, it can change the chain structure by 100%, and the effect after perming is that the flower letter shouting type is not good in the wet hair state, and the flower type is good and elastic after dry hair.

Two. Different patterns after scalding

Due to the imperfect change of the chain structure, the hair must be moisturized and styling products after perming, such as gel water, gel cream and other styling products, so as to maintain the effect of the hairstyle.

After 15 days of hot scalding, you should use the styling product to increase elasticity, and after 15 days, you can not apply any styling product. It works better on dry hair.

Three. The difference in the way of heating

Cold perm is performed using body temperature and room temperature of the slipper'The main ingredient of a dose is ammonia, the purpose of which is to swell the scale tissue, which is conducive to the penetration and absorption of the vulcanizing agent, so that the chain can change its original state. If the room temperature does not reach 15°C, it can be heated appropriately, and the heating temperature can be set below 40°C. Excessive heating can cause damage to the proteins in the hair, making it stiff and inelastic.

Blanching must be heated, and heating is divided into internal heating, external heating, internal and external heating, etc. The purpose is to reorganize the memory of the water that is cut off in the hair, and the water in the hair needs to be between 100 °C and 140 °C to produce memory reorganization, so the temperature should be controlled between 100 °C and 140 °C when heating, and the moisture in the hair needs to be dried with heat to achieve the effect of reorganization.

Four. The hair type is different

Cold perm is a perm method with the hair cuticle open, which has a good effect after perming for healthy hair, if the perm is damaged hair, then the texture of the perm will be loose and alive.

Hot perm is a perm method with closed cuticles, which is specially created for damaged hair, which can maximize the nutrients inside the hair and reduce the damage caused by perm to the hair.

First of all, the temperature is different, cold perm is the process of using chemical reactions at room temperature to complete the perm; Perming is heated at a high temperature of 100 to 140 degrees Celsius to break the disulfide and hydrogen bonds, which can change the hair structure and reshape the hairstyle.

Secondly, the scope of application is different, cold perm can start curling hair from the root of the hair, which is suitable for all kinds of curly hair styles; However, hot perm is limited by equipment, and the hair curl cannot be close to the scalp, and it is not possible to start the perm from the root of the hair.

In addition, the degree of hair damage is also different, and cold perm has a certain amount of damage to hair, but it is relatively low; However, hot perm has a higher degree of damage to the hair, and improper operation is easy to scorch the hair.

Finally, the requirements for hair quality are different. Cold perm has high requirements for hair quality, and hair with fine or soft hair or poor hair quality is easy to straighten after cold perm, while thick and hard hair is not easy to perm. The hot perm can change the nature of the hair, and the coarse and hard hair can also be curled with the hot perm.

5. Cold perm: The requirements for hair quality are high, and the hair with fine and soft hair or poor hair quality is easy to straighten after cold perm, and the thick and hard hair is not easy to perm.

Hot perm: It can change the nature of the hair, and the coarse and hard hair can also be curled with a thermoplastic perm.

Cold perm is more harmful to hair than hot perm, but cold perm is better than hot perm. Cold perm and hot perm should not be distinguished from good and bad, first of all, it depends on the choice of hairstyle and hair quality, because it directly affects the final effect, and the method of perm should be selected according to the desired effect.

Cold perm is a general perm, after the perm to moisturize, when wet is curly, when dry the curl is not good, after the hair is hard and inelastic. Hot perm, now separate sub-perm, ceramic perm, digital perm, etc. Soften first, on the upper bar.

The difference of this perm is that the curl is not much when wet, but the curl is better when dry, and the hair is soft and elastic.