This proprietary blend of fulvic acid (a derivative of plant matter) is mined from an 80 million year old source deep within the earth. Naturally black in color, the formula binds to the molecules of pure Canadian spring water giving blk its signature black color, with no artificial dyes, coloring, or additives. Fulvic acid is critical in the growth of plant life, helping the transportation and absorption of nutrients.
Found by @gemmaanderson