When it comes to whether glycolic acid causes dryness
The nature of glycolic acid has been widely discussed in the world. However, the reason is not generalized.
Glycolic acid belongs to the category of alpha-hydroxy acids. Its effect on the skin is primarily to promote the shedding of stratum corneum cells. If the stratum corneum cells accumulate for a long time, the skin may be rough and dull. Glycolic acid can loosen the connections between cells, causing the old keratin to fall off, and the skin will be reborn. This is also a function.
However, some people think that at the same time as it promotes exfoliation, it may cause damage to the skin barrier, water dispersion and drying. In fact, if it is used properly, it may not be the case. Moderate use of glycolic acid can start the repair mechanism of the skin and maintain the hydrated state. And glycolic acid can stimulate the collagen synthesis of the dermis, make the skin firm and elastic, and indirectly help the skin moisturize.
If the dosage is excessive and the frequency is too excessive, the skin barrier will be difficult to support. The stratum corneum exfoliates quickly, and it is too late to replenish lipids, and the moisture is easily lost, resulting in a feeling of dryness. Or individual skin types are different, and those with sensitive skin have poor tolerance to glycolic acid, and are more likely to show dryness, tingling, etc.
Therefore, whether glycolic acid causes dryness depends on the way of use and individual skin type. Reasonable use of it can achieve the effect of skin beauty and less dryness; if used improperly, dryness may occur. Both doctors and users should exercise caution to achieve the purpose of optimal skin care.