I first used this formula in the 90's. I had two formulas filled in Philly's Chinatown, this one and a white eyebrow formula from the Doo Wai lineage, through James Lacy. My previous experience was a japanese formula and then the Brian Gray formulas, which I used for a long time. This formula is eclectic, but extremely effective- in fact it is better than the previous formulas I used by a factor of about 7-10. This is the first time I purchased this formula from Plumdragon, but the familiar smell is unmistakeable and helps trigger the proper mindset. I will say the herb used seems to be the freshest I've gotten in a pre made jow so far, even better than some individual herb purchases I've made. Plumdragon usually has good fresh herbs, which I have purchased individually in the past.