On the Method of Combining Glycolic Acid and Lactic Acid
Glycolic acid and lactic acid are both commonly used acids in skin care. The two have their own characteristics. If they can be combined well, they may have better effects, but there are also many details.

Glycolic acid has small molecules and has strong power to penetrate the skin. It can quickly reach the deep layers of the skin, effectively loosen the connections between keratinocytes, make old keratin easy to fall off, and then make the skin surface smoother and more delicate, and can promote skin metabolism, stimulate collagen production, and have a good effect on improving skin texture and fading fine lines.

Lactic acid is relatively mild and has outstanding moisturizing properties. It can form a moisturizing film on the surface of the skin to retain moisture and make the skin hydrated and full. At the same time, it also has a certain exfoliation effect, which can gently improve the rough condition of the skin.

When using both, choose the first concentration. If the skin is more tolerant, you can try a lower concentration of glycolic acid with a moderate concentration of lactic acid. For example, the concentration of glycolic acid can be 2% - 5% first, and the concentration of lactic acid can be 5% - 8%. In this way, you can not only get the deep skin rejuvenation ability of glycolic acid, but also use the gentle moisturizing of lactic acid to reduce skin irritation.

However, if the skin is sensitive, you must be cautious. The starting point should be a combination of two very low concentrations, such as glycolic acid 1% - 2%, lactic acid 3% - 5%, and the frequency of use should not be too high. You can use it 1-2 times a week, and then increase the frequency as appropriate after the skin adapts.

Furthermore, there is also a way to use the order. Generally speaking, you can use glycolic acid products first, wait for them to act on the skin for a while, wash them a little, and then use lactic acid products. In this way, you can use glycolic acid to open the skin channel first, so that the subsequent moisturizing and gentle rejuvenation effect of lactic acid is better.

You need to pay attention to the skin care after use. Due to the combination of the two, the skin may be more sensitive, so it is necessary to strengthen sunscreen and apply a gentle moisturizing cream to prevent skin damage.

In short, the combination of glycolic acid and lactic acid, if the concentration, clever arrangement, and careful care are adjusted according to the skin condition, it may bring more ideal improvement to the skin and make the skin glow.