On the use of azelaic acid and retinol in sequence
In the way of skin care, azelaic acid and retinol are both important substances. However, the use of the two in sequence is related to efficacy and skin comfort, which cannot be ignored.

Azelaic acid has the ability to resist inflammation, suppress acne, and brighten the skin. Its mild nature can be suitable for most skin types, especially for acne muscles and dull skin. Retinol can promote cell renewal, increase collagen production, and stroke lines and resist aging. However, its sex is strong, and it may cause skin discomfort when used for the first time.

If the skin is well tolerated, retinol can be used first and then azelaic acid. Retinol goes first, opening the path of skin absorption, promoting cell metabolism, followed by azelaic acid, strengthening the anti-inflammatory and brightening effect. And retinol makes the stratum corneum renewed, azelaic acid is more easily penetrated, and the two are synergistic, and the effect is obvious. However, this order needs to pay attention to the skin's reaction. If you feel uncomfortable, stop and adjust quickly.

If the skin is sensitive, azelaic acid is appropriate. Azelaic acid is a gentle primer, stabilizes the skin state, and slows inflammation. Later, use retinol and introduce it slowly to reduce the risk of irritation. When the skin adapts, adjust the order or increase the dosage.

In short, the use of azelaic acid and retinol depends on the characteristics and tolerance of the skin. Only by using it properly can you get the effect of maintaining the skin and radiating the color and standing on the face.