On the Compatibility of Glycolic Acid, Azelaic Acid and Niacinamide
The way of skin care, the compatibility of ingredients is the key. Glycolic acid, azelaic acid and niacinamide are all commonly used ingredients in skin care, but whether they can be used together is really related to the efficacy and skin safety.

Glycolic acid belongs to the class of fruit acids and has excellent exfoliation power. It can accelerate the metabolism of epidermal cells, rejuvenate the skin, exfoliate, lighten spots, and brighten the complexion. However, its acidic characteristics are highly irritating to the skin. If the skin is sensitive, it may cause discomfort.

Azelaic acid, can inhibit the growth of microorganisms, reduce inflammation, and has a good effect on acne vulgaris, rosacea, etc. And can improve pigmentation and even skin tone. Its nature is relatively mild, but when the concentration is high, it may also cause skin intolerance.

Niacinamide has a wide range of functions. It can inhibit the transfer of melanin to the epidermis and brighten skin tone; it can repair the skin barrier and enhance skin resistance; it can also regulate sebum secretion, suitable for oily skin.

As for whether these three are compatible. Glycolic acid is highly acidic and is used with nicotinamide. Under specific pH conditions, or nicotinamide converts to niacin, niacin is highly irritating to the skin and is easy to cause redness, itching and other discomforts. However, if the product formula is exquisite and the pH value is well controlled, this problem can also be avoided. Azelaic acid has no direct chemical reaction with glycolic acid and nicotinamide in theory, and is relatively safe to match.

Therefore, if glycolic acid, azelaic acid and nicotinamide are used together, the skin is first tolerated. Use a single ingredient first to observe the skin reaction. If well tolerated, then try to use it together. And it is appropriate to start with a low concentration and a small range, and gradually increase the dosage At the same time, pay attention to the pH value and formula of the product, and give priority to products that have been professionally developed and tested to ensure the compatibility of ingredients. In this way, the purpose of skin care can be achieved and the risk of skin damage can be avoided.