Hypothesis refers to a proposed explanation for an observed phenomenon. It is a statement which offer a proposition for a phenomenon that has been observed. A scientific hypothesis has to be proofed by carrying out experiment.
To hypothesize why BOG acid reaction with bone is different from that of organs and the hair, a simple sentence like the one below can be put forward:
BOG acid react differently with bones and skin as a result of the different chemical components that are present in the two body parts.