The difference between buffered and non-buffered glycolic acid
is quite common in the field of skin care. However, there is a difference between buffered and non-buffered glycolic acid, and the difference between the two cannot be ignored.

First of all, buffered glycolic acid. This type of glycolic acid is specially prepared and a buffer is added to it. The function of the buffer is to regulate the pH of the solution and maintain its pH within a specific range. As a result, the pH of buffered glycolic acid is relatively high, usually between 3.5 and 4.5. This property makes it milder and suitable for a variety of skin types. Even people with sensitive skin may also try to use it. Because its pH value is similar to that of the skin, it is less irritating when applied to the skin, and can effectively avoid discomfort caused by excessive stimulation of the skin, such as redness, swelling, and tingling. And when it works, it is relatively gentle and gradually improves the skin condition, such as promoting keratin renewal, so that the old waste keratin on the surface of the skin naturally falls off, which makes the skin glowing and smoother to the touch.

As for non-buffered glycolic acid, compared with buffered type, the difference is significant. Non-buffered glycolic acid has no added buffer, and its pH value is lower, usually around 2.5. Lower pH value gives it a more powerful acidity. Although this strong acid can play a role quickly and efficiently, such as strongly exfoliating the skin, accelerating the skin's metabolism, and improving acne, dullness, fine lines and other problems, it can often show obvious results in a short period of time. However, its irritation is quite large, and it is only suitable for skin with strong tolerance. If used rashly on sensitive skin, it is very likely to cause serious discomfort, and skin redness, burning, allergies and other phenomena may follow.

To sum up, buffering and non-buffering glycolic acids have their own advantages. When choosing to use, when based on your own skin type. For skin with weak sensitivity or tolerance, buffer glycolic acid should be selected for heat preservation and care; for those with strong tolerance and want to quickly improve specific skin problems, non-buffer glycolic acid may be a good choice. Only by distinguishing the difference between the two can we use them reasonably to achieve the best skin care.