On the combined use of glycolic acid and retinoic acid to nourish the skin, the way of medication is related to health and appearance. The combination of glycolic acid and retinoic acid is of great concern to physicians and beauty lovers.

Glycolic acid is an alpha-hydroxy acid with unique skin effects. It can loosen the connection between keratinocytes, promote the cuticle to fall off, make the skin surface renewed and radiant. And can stimulate the synthesis of collagen in the dermis, improve the texture of the skin, and make the skin firmer.

Retinoic acid is also a commonly used medicine for skin care. It can regulate the proliferation and differentiation of epidermal cells, inhibit the secretion of sebaceous glands, improve the abnormal keratosis of hair follicles, and has a significant effect on skin diseases such as acne. At the same time, it can promote the synthesis of dermal elastic fibers and hyaluronic acid, reduce wrinkles, and delay skin aging.

However, the use of both should be handled with caution. Glycolic acid can cause the stratum corneum of the skin to thin and enhance skin permeability. At this time, if retinoic acid is used in combination, it may aggravate the irritation of retinoic acid to the skin. The skin is prone to discomfort such as erythema, desquamation, itching, and burning. Therefore, at the beginning of combined use, it is advisable to start with low concentration and small area, and gradually increase the

Furthermore, when used together, sun protection is essential. Both glycolic acid and retinoic acid can make the skin more sensitive to ultraviolet rays. If sun protection is not done well, it is easy to cause problems such as pigmentation and sunburn. When going out, it is advisable to apply sunscreen, hold a parasol, wear a sun hat, and avoid direct sunlight.

In short, the combination of glycolic acid and retinoic acid, if used properly, may achieve better skin care effects. However, users must carefully observe their own skin conditions and follow the guidance of professionals in order to seek advantages and avoid disadvantages and achieve the purpose of skin care.