On the combination of glycolic acid and lactic acid
The method of skin care in the world, in the combination of ingredients, is more particular. Glycolic acid and lactic acid are both commonly used acids in skin care.

Glycolic acid is more active, with tiny molecules, can quickly penetrate the surface of the skin, exfoliating the skin significantly, rejuvenating the skin, and has a smooth color. However, it is strong in nature, and those with delicate skin may feel uncomfortable.

Lactic acid, relatively mild, has a moisturizing effect, retains skin moisture, and can also slowly exfoliate and improve skin texture.

As for whether the two can be used together, it is necessary to be cautious. If the skin is healthy and tolerant, the combination of the two will increase the ability to exfoliate and rejuvenate the skin. Glycolic acid quickly rejuvenates the skin, supplemented by lactic acid, and retains water and skin care, which complements each other.

However, for people with sensitive and weak skin, the combination is dangerous. Both have the power to exfoliate, and are used in combination, or cause damage to the skin barrier, followed by redness, swelling, itching, etc.

Therefore, if you want to use glycolic acid and lactic acid, you should first observe the nature of your own skin. Those who are tolerant can try it on a small scale, observe the skin's reaction, and gradually increase it; for sensitive and weak skin, when avoiding the combination, it is appropriate to choose a mild single dose of skin care. In this way, you can keep your skin healthy and get the benefits of skin care.