On the phase of glycolic acid and caffeine solution
The phase of the ingredients is the key to the skin care products used in the world. Glycolic acid is very effective in rejuvenating the skin, and is often the choice of good skin care products. It can exfoliate, make the skin smooth and delicate, and have a uniform color. Caffeine solution is also not inferior. It has remarkable effect on improving skin edema and boosting skin vitality. However, the two are compatible. How the phase is is really a matter of concern.

Glycolic acid is acidic and active in nature. If applied in combination with caffeine solution, it may cause changes. From the perspective of chemistry, the acidic environment or the chemical structure of caffeine can cause changes, which in turn affects its effectiveness. Covering caffeine under specific acid and base conditions can maintain the stability of its activity. The intervention of glycolic acid may break this balance.

Looking at various practices, some people use them to try, and they feel that the skin reacts differently. For those with sensitive skin, the two are used together, causing discomfort, or redness and itching. This may be because glycolic acid weakens the skin barrier temporarily, and the stimulation of caffeine takes advantage of it, making it difficult for the skin to withstand. However, there are also those with tough skin who do not feel obvious abnormalities, and feel that the effect of skin care is superimposed, and the skin is both rejuvenated and energetic.

From this point of view, the phase of glycolic acid and caffeine solution cannot be generalized. Users should first examine their own skin characteristics, test their sensitivity to small areas of skin, and observe their reactions. If the skin tolerates it, it may be appropriate to apply it in combination to obtain the benefits of double effect; if the skin is sensitive, in order to avoid skin damage, be careful, or choose one and use it, or find another suitable method to protect the skin and worry-free.