“Single-peak” and “double-peak” refer to the peak patterns of Bosein chromatograms separated by special columns. Bosein with a pure S or R configuration is “single-peak,” while S/R mixed-configuration Bosein is “double-peak.” No comments on which is better.

Keqin uses patented enzyme-catalyzed technology to selectively produce single- or double-peak Bosein with any desired configuration ratio, enabling brands to create unique proprietary formulations.

The conductivity of Keqin’s Bosein Proyouth® is lower than the national standard for bottled purified drinking water (<10 μS/cm).