The reason for the tingling of azelaic acid
Those who use azelaic acid may feel tingling, which is caused by many reasons.

First of all, the skin has different tolerance. Human skin has different temperaments. Some skin is delicate and sensitive to various ingredients. Although azelaic acid is a good skin care agent, it is suitable for delicate skin, such as strong wind and weak willow, which is easy to cause discomfort. When first used, the skin is suddenly touched, and it has not been adapted, so it stings. If you have sensitive skin, which is prone to redness, itching and irritation every day, the tingling will be even worse when you encounter azelaic acid. Because of its weak skin barrier, it is difficult to resist changes in the outside world. The effect of azelaic acid is like a stone hitting thin ice, and the tingling is born.

The second time, the concentration is related. Azelaic acid has different concentrations, and the efficacy and irritation are also different. High concentrations, although the efficacy is strong, the irritation is also severe. Like a strong medicine, used properly, the disease is not healthy; if not, it is easy to hurt the righteousness. Low concentrations of azelaic acid are relatively mild, and they are not suitable for everyone. If the skin is intolerant, even if the concentration is low, it may sting. For beginners, if you rashly use high concentrations of azelaic acid, the skin will be unable to withstand its strength, and the tingling feeling will follow.

Furthermore, the method of use is wrong. If azelaic acid is applied improperly, or if it is applied too thickly or too frequently, it can cause tingling. The skin's absorption capacity is fixed, and if it is applied too thickly, it will be difficult to move smoothly if things are blocked in the road; if it is too frequent, the skin will be overwhelmed, and if people work endlessly, they will be tired. And before using azelaic acid, if the skin is not properly cleaned, the residual dirt will interact with azelaic acid, which will also cause discomfort. For example, after cleansing, the face is not dried, water stains are mixed with azelaic acid, and the mode of action is changed, and the tingling feeling will occur.

In addition, the skin is in poor condition. When the skin is damaged or inflamed, such as sunburn, allergies, or acne inflammation, its ability to resist is greatly reduced. At this time, using azelaic acid is like sprinkling salt on a wound, and tingling is inevitable. At the inflamed part of the skin, the cells are active and fragile. The stimulation of azelaic acid makes the already sensitive nerves respond more strongly, and tingling will follow.

To sum up, azelaic acid tingling is related to skin tolerance, concentration, method of use and skin condition. If you want to use it without tingling, you should carefully observe your own skin and choose the appropriate concentration according to the correct method to achieve the effect of skin care and avoid the pain of tingling.