On whether glycolic acid can remove hair dye

There is a custom of hair dyeing in the world, and everyone seeks its color beauty. Then after dyeing or wanting to change the color, they think of ways to remove it. Today there is glycolic acid, which has attracted much attention in the removal of hair dye.

Glycolic acid is active and has unique uses in many chemical processes. Its molecules are delicate and contain carboxyl and hydroxyl groups, which give glycolic acid special chemical activity.

To test whether it can remove hair dye, it is appropriate to investigate the mechanism of its action. The color of hair dye comes from the pigment particles it contains. Such particles are either adsorbed on the surface of the hair or deeply penetrated into the internal structure of the hair. The carboxyl group of glycolic acid can interact with the charge of the hair dye pigment particles. If the charges match, the two may form an ionic bond or a hydrogen bond. And its hydroxyl group is hydrophilic, which can enhance the solubility and diffusion of glycolic acid in water, help it penetrate into the hair structure, and is easier to approach the pigment particles.

Looking at various experiments, the dyed hair was placed in a solution containing glycolic acid. If the solution concentration is appropriate and the treatment time is appropriate, it can be seen that the color of the hair is gradually fading. This phenomenon shows that glycolic acid does have the effect of removing hair dyes. However, if the concentration is too high, although it can quickly remove the color, it is easy to damage the hair. The main component of hair is keratin, or due to the excessive action of high-concentration glycolic acid, its structure is damaged, and the hair becomes fragile and easy to break.

And the scale structure of the hair is also affected by glycolic acid. Under moderate action, glycolic acid can loosen the hair scales, making it easier for pigment particles to detach; if it is excessive, the scales will be seriously damaged, the hair's ability to lock water will decrease, and the appearance will be rough and dull.

In summary, glycolic acid does have the ability to remove hair dyes, so it should be used with caution. The concentration and treatment time of glycolic acid must be precisely regulated according to factors such as hair texture and degree of hair dyeing, so as to achieve the purpose of removing hair dye and protecting hair. The user must not ignore it.