On the length of time glycolic acid remains in the hair
Glycolic acid is quite important in the way of hair care. However, the length of time it remains in the hair is really related to the effectiveness of hair care, which cannot be ignored.

If the hair is soft and healthy, and the oil secretion is appropriate, the period of glycolic acid retention should be about fifteen to twenty minutes. At this time, glycolic acid can slowly penetrate into the hair, remove scale and stain, and make the hair soft and shiny without hurting its foundation.

If the hair is dry and dry, or has been damaged, if it has been permed and dyed, it should be slightly reduced, about ten minutes is enough. Cover this kind of hair, already fragile, although glycolic acid has the ability to increase hair, but if you stay for a long time, you may cause too much harm and damage the hair.

As for hair that is too oily, or you can slightly extend its hair retention, about 20 to 25 minutes. With this, you can strongly remove oil, make the hair roots refreshing, and the hair strands are elegant.

However, no matter what kind of hair quality, after using glycolic acid, you must clean it with water to ensure that there is no acid residue. And the frequency of use also needs to be considered, and it should not be too complicated. If you frequently apply glycolic acid to the hair, even if the initial effect is significant, it may hurt the hair for a long time.

In general, if you want to get the beauty of glycolic acid hair care, you must control the length of hair retention according to the difference in hair quality, so that the hair can maintain a healthy state and radiate its natural beauty.