It doesn't degrade the receptor so there's no need for it to regenerate. We see that after 6 months without treatment the diameter of the hair shafts is significantly thinner. I think two things are at play. One is that the longer you take it the larger the DP gets. A larger DP increases Wnt and Hedgehog signaling outside of any treatment upregulating them. Additionally, some of the factors upregulating PRLR and Prl binding affinity are reversed significantly.