On the method of using glycolic acid for hair
If you want to make good use of glycolic acid on your hair, you must know its properties. Glycolic acid has unique ability, but it should be applied to your hair with caution.

First check the hair quality. If the hair is dry and the stratum corneum is not moisturized, use glycolic acid slowly and dilute. Although it can help keratin renewal, dry hair is fragile, and if it is used too quickly, it may damage the luster and toughness of the hair. Dilute glycolic acid with warm water and adjust it to a moderate concentration, such as a 20% solution, before the hair tip is tested, observe the reaction, and then use it gradually without discomfort.

If it is oily hair, the oil secretion is excessive, and glycolic acid can help clear the hair follicles and control the oil. Can slightly increase the concentration, about 30%, evenly apply to the root to the tip of the hair, gently rub for a while, then stay for a long time, about a quarter of an hour, then rinse with water.

And the frequency of use. Dry hair should be used once every half a month to avoid excessive exfoliation and hair loss. Oily hair can be used once a week or two weeks depending on the situation, adjusted according to the oil situation.

And after using glycolic acid, it must be well maintained. A nourishing hair mask needs to be used to nourish and moisturize the hair and build a protective film. In this way, glycolic acid is used for hair, which can promote strengths and avoid weaknesses, making hair healthy and beautiful.