On the appropriate time to use glycolic acid on the face
Those who want to make good use of glycolic acid on the face should know the appropriate time. This is related to the acceptance of the skin and the manifestation of its efficacy, which cannot be ignored.

In the morning, the sun is not shining, and the skin is early. After cleansing, if the skin has good tolerance, glycolic acid can be applied. However, it should be noted that the ultraviolet rays are slightly stronger during the day, and sun protection must be used after applying acid. Glycolic acid loosens the stratum corneum of the skin and increases its permeability. At this time, the skin is easily injured by ultraviolet rays. Therefore, when using acid during the day, sun protection is necessary to avoid the risk of sunburn and pigmentation of the skin.

As for dusk, it is also a good opportunity. After a day's work, the skin may accumulate dirt and metabolic waste. After cleansing at night, when the skin is dry, apply glycolic acid. When repairing the skin at night, glycolic acid can help the skin's metabolism, accelerate the exfoliation of old waste keratin, and promote collagen regeneration. And there is no worry of ultraviolet rays at night, and the skin can focus on absorption and repair.

However, beginners or those with sensitive skin should be careful. It is advisable to try it on a local and small scale first to see if the skin has any discomfort, such as tingling, redness, etc. If there is no abnormality, then gradually expand the area of use. When starting to use, the frequency should be sparse, such as once or twice a week, and then gradually increase according to the skin's tolerance.

In general, glycolic acid is used on the face, and it can be used as a machine in the morning and evening. However, it must be heavily protected against the sun during the day and can help repair at night. Users should choose carefully according to their skin conditions to get the beauty of glycolic acid skin care and avoid skin damage.