When it comes to the combination of glycolic acid and retinol
, everyone seeks good things for skin care. Glycolic acid and retinol, both in the field of skin care, each show their own abilities. Whether they can be used together is doubtful.

Glycolic acid is a fruit acid or the like. Its molecules are delicate and can penetrate deep into the skin. The bond between the soluble cuticles makes the old and waste cuticles fall off, the skin is refreshed, the color is uniform, and the texture is delicate. And it can promote collagen regeneration and slow down the aging of the skin.

Retinol is a derivative of vitamin A. It can regulate the metabolism of epidermal cells, increase the hydration of the stratum corneum, and make the skin smooth. It can also stimulate collagen synthesis, reduce wrinkles, and increase skin elasticity.

However, when the two are used in combination, caution is required. Glycolic acid reduces the pH of the skin and presents an acidic environment; retinol is unstable in acidity and easily loses its effect. And both are irritating. When used together, the skin may be unbearable, causing redness, swelling, tingling, and desquamation.

If you want to use them together, test the sensitivity first. Apply a small amount behind the ear or on the inside of the forearm, and wait for a few days to see if there is any discomfort. And when initially used, the concentration should be low and the frequency should be small. If glycolic acid is used every few days, after the skin adapts, retinol should be added as appropriate, and the interval between the two is several hours, so that the skin has a buffer.

In short, the combination of glycolic acid and retinol may have the hope of increasing efficiency, but the risks coexist. Users should follow their skin type and be cautious. If they feel unwell, stop using it immediately for medical treatment.