The most convenient and quick way is to check the anti-counterfeiting number behind Angel Yeast. As long as the number does not exist, then this "Angel Yeast" must be fake, and if you buy multiple packages of yeast and find that these numbers are the same, then this batch of yeast must be fake, because the anti-counterfeiting code of Angel Yeast is impossible to repeat.
In addition, we can observe the packaging of Angel Yeast. Generally, the fake Angel Yeast has rough printing, unclear handwriting, vague anti-counterfeiting code, illegible handwriting at the bottom, and no foreign languages such as Russian, Mongolian and Japanese on the side.
Finally, it depends on the use effect. I think everyone knows that the real Angel's hair surface effect is fast and delicious, while the fake one doesn't get up at all or the hair surface is very slow. If you encounter the above situation, it is recommended to contact Angel after sales and consult them about the specific situation.