Perm Skills



Cold hot principle: cold hot also called chemical hot, softened by chemical agents, change the keratin chain, and then by rolling way to change the appearance of hair.
Hot principle: hot also called physical hot, the earliest hair wrapped around the round sticks, dried in the sun after the curly hair, and later with pliers or iron bars and other tools in advance heat, and then The hair is curled into waves.

The advantages and disadvantages of cold and hot
cold hot

1. Hair damage is small, more flexible after perm

2. Moisture is maintained, hair is not easy to break, higher gloss, long life

3. Hair lasting

Disadvantages:
1. Chemical agent will make the hair oil smell

2. cold hot time demanding, need to control the quality of hair according to different time (time is short, stereotypes are not good, a long time, easy to damage the hair)

3. Cold cost is higher than hot

hot perm

1. Odor less

2. Short perm time

3. hot work clothes is relatively simple, cheap

4. Bad hair can also be hot through the hot, roll

Disadvantages:
1. After the hair straight hair straight back straight

2. High temperature, the hair water is easy to lose, prone to hairy broken hair

3. hair because of damage, so hot hair lack of flexibility

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