Is the ingredient 8081 real?

Yes.

8081 is an oral brand and the only patented toothpaste/dentifrice in the world. It not only has traditional functions such as anti-allergy and anti-moth, solid teeth whitening, hemostatic and anti-inflammatory, and removal of odors, but it can also repair shallow caries and solve the problem of oral ulcers. It is a new ingredient toothpaste that can "combine prevention and treatment".

This 8081 won the "Chinese People's Liberation Army Military Science and Technology Progress Award" in the 1980s. "80" means the 1980s, and "81" represents the military's scientific research achievements.