Discussion on Azelaic Acid and Glycolic Acid on Reddit
Recently, in the Reddit community, people have been discussing the advantages and disadvantages of azelaic acid and glycolic acid. Both of these are commonly used ingredients in the field of skin care, and each has its own unique effects, so they have been hotly discussed by netizens.

Some netizens said that azelaic acid has antibacterial and anti-inflammatory properties, and is effective in the treatment of acne and rosacea. It is mild and non-irritating, and can be tolerated even by sensitive skin. After use, the skin's inflammation is reduced, redness and swelling are eliminated, and the skin tone is gradually uniform. For example, if a user shares his personal experience and says that he has suffered from mild acne for a long time, he has tried a variety of products without good results. After using skin care products containing azelaic acid, after a few weeks, the acne is significantly reduced and the skin is smoother.

However, glycolic acid is not much better. It is a fruit acid, which can accelerate the metabolism of the stratum corneum, make the old waste keratin on the surface of the skin fall off, and make the skin glow. And it can penetrate deep into the skin, promote collagen production, effectively improve fine lines, wrinkles, and improve skin firmness. Some netizens have reported that after using glycolic acid products for a period of time, the skin becomes more delicate, and the dull color is reduced, as if it is youthful again.

However, some netizens pointed out that although glycolic acid has excellent efficacy, it is highly irritating, and beginners need to be cautious. If the concentration is too high or used improperly, it is easy to cause skin redness, swelling, tingling, and even peeling. In contrast, azelaic acid is mild, but its effect is relatively slow, and it needs to be used continuously to see significant results.

Everyone expressed their opinions on Reddit, either praising the mildness of azelaic acid or praising the strength of glycolic acid. In fact, the way of skin care, your mileage may vary, choose azelaic acid or glycolic acid, depending on the individual skin type, skin problems and tolerance. Only careful choice can achieve the ideal skin care effect.