The extract mixed into the hemp seed oil is absolutely prone to variation due to coming from an organically grown hemp material. It is grown outside with zero GMO’s or pesticides etc. meaning it is incredibly difficult to create exactly the same extract when using different harvests. All the natural constituents of hemp, namely the active cannabinoids and terpenes, are present across each batch due to being manufactured by chemists to meet a strict technical specification.
This product is not like others with a few simple ingredients. The combination of terpenes & cannabinoids in cannabis sativa hemp is extremely complex and varied. This is part of the beauty of the plant and the variance should be enjoyed, as those are the organic compounds of cannabis you are experiencing.