JUST 20% Glycolic Acid? I wouldn't believe it. The acid is buffered, so you get far... far from the strength that ONLY 20% glycolic acid should provide. The name is very misleading in this case.
Unfortunately, all scientific evidence for the product is thrown out the window at the same time. So what do we have here really? What is it supposed to do? It does nothing. Moreover, it dries after 1 minute even though it says to leave it on for 15 minutes. Not even when I continuously apply the solution for 15 minutes do I get any direct signs that I've had acid on my face.
It is weak, weak, weak. And I suddenly understood why my sister threw her 7% glycolic acid product in the trash and said it didn't work.
This is a garbage product and has nothing to do with "professional" glycolic acid products. The formula is idiot-proof due to its ineffectiveness. 20% Glycolic Acid should be used once every two weeks due to its strength, but this product should be used every day. Right there is the proof that it is ineffective.
But it is cheap anyway.
1 product in post Misleading and weak. Does nothing.