2, because alkalinity will hurt hair, so it is not suitable for perm some damaged hair. Therefore, some manufacturers have introduced acidic perm water, the essence of which is the same, except that thioglycolic acid is wrapped in an alkaline film, which is acidic outside the film and alkaline inside the film, and thioglycolic acid lives in this alkaline bubble.
When thioglycolic acid needs to be released, add three special doses (generally, acidic perm water is three doses, and when used, mix one dose, and some will have a fever. ), its function is to pierce the alkaline membrane, thus releasing thioglycolic acid,
3. Because thioglycolic acid will deteriorate after staying in acidic environment for 30 minutes, this liquid medicine must be used up within 30 minutes. Perfect for perm hair. Of course, due to alkalinity, resistance to hair will inevitably fail due to insufficient opening of hair scales.
Extended data:
Seven nursing methods after perming;
1, strengthen nourishing care
Hair tends to become dry and dull after perming, not only because of lack of water, but also because of lack of nutrition.
Therefore, you should not only use conditioner every time you wash your hair, but also deeply nourish your hair once a week, which can enhance the luster of your hair.
It should be noted that after shampooing, the conditioner should be applied from the hair root to the hair end, and applied repeatedly for three times until the essence is completely absorbed.
Sticking to it for about 30 days can effectively relieve the dry state of hair after perm and become natural and shiny.
Step 2 Use moisturizing styling products
In order to maintain the styling effect, wipe off the water with a dry towel after washing your hair, and then use moisturizing styling products.
Wet the water before using moisturizing products every morning. Try not to comb with a comb, but gently scratch your hair with your fingers.
3, do a good job of intensive care
The key is intensive care. If Doris is used to protect hair, its molecular weight is smaller than nano, which can enter the center of hair core and have a certain repair effect on damaged hair.
At the same time, it can also be matched with Doris plant local oil patented shampoo, which can achieve twice the result with half the effort!
4. Wash your hair with low-temperature water.
Many people know that they should choose some special shampoos and conditioners suitable for their hair after perming, but they don't know that the appropriate water temperature is also very important. The higher the temperature of the shampoo, the better.
Washing your hair with low-temperature water is beneficial to the closure of hair scales.
So I suggest you pay attention to the water temperature of shampoo. At the beginning of shampooing, the temperature should be controlled to be higher than the body temperature, and at the end of shampooing, the water temperature should be controlled to be lower than the body temperature, which is beneficial to hair quality.
5. Eat more vegetables and fruits rich in vitamins.
We know that if the body lacks vitamins, it will lead to dull hair, especially after perm.
For example, vitamin B can promote hair growth and make hair appear natural luster, while vitamin C can activate microvascular wall and make hair absorb nutrients in blood smoothly.
Therefore, usually eat more vegetables and fruits rich in vitamins, green vegetables and yellow fruits, which are particularly rich in elements, such as celery, spinach, bananas, leeks, etc., which have a good effect on restoring the healthy luster of scalded hair and can also protect skin.
6. Eat more seafood.
The condition of hair is also closely related to the secretion of thyroxine in the body.
However, once a woman is over 30 years old, the ability of thyroid hormone secretion in the body will decline.
However, marine food is rich in iodine, which is the main raw material for synthesizing thyroxine in the body.
Therefore, eating more seafood can promote growth, moistening and blackening, especially after perm.
7. Repair nourishing shampoo
Pay special attention to choosing shampoo after perm. Be sure to use some shampoo that has the function of repairing and nourishing, or you can use shampoo specially designed for curly hair, which will help the recovery of hair quality and promote the absorption of nutrition by hair quality.
References:
Perm _ Baidu encyclopedia