On the principle of using glycolic acid and lactic acid together
for the skin, if you want it to be smooth and smooth, the genus glycolic acid and lactic acid is often used. However, whether the two can be applied together is really important.

Glycolic acid belongs to fruit acid and the like. The molecules are tiny, which can quickly penetrate the surface of the skin, rejuvenate the stratum, make the skin initially tender, and help the skin hydrate and increase its moisturization. Lactic acid is also a member of the fruit acid family, which has the ability to gently exfoliate, can also adjust the acid and alkali of the skin, keep the environment stable, and also moisturize the skin, so that the skin is hydrated.

If the two are used together, caution should be taken. Because they are all acidic, the same use may cause excessive acid erosion of the skin. Check the skin's properties first, if it is a tolerant quality, or you can try it. At first, use low-concentration glycolic acid and lactic acid preparations, and apply them every now and then. Check if the skin has any discomfort, such as redness, tingling, itching. If there is no abnormality, you can gradually increase the frequency.

However, sensitive skin, do not try it lightly. Because it is delicate, the two are used in combination, which can easily irritate the skin and cause allergies, such as redness, swelling, rash, etc.

Furthermore, when used together, daytime protection is the most severe. Both can increase the skin's sensitivity to light, so it is necessary to apply sunscreen products to avoid direct sunlight to prevent sunburn and pigmentation.

In short, the combination of glycolic acid and lactic acid can achieve good results. However, it is necessary to know the skin characteristics in detail and practice them in order to achieve the purpose of nourishing the skin and avoid the risk of skin damage.