Biosilk and Biolage are made by two different companies. Biolage is a Matrix product and biosilk is a company of thier own. Both are sold in hair salons. Sometimes I have seen both a cvs or target. They are the same price there as they are in the salon. They aren't suppost to sell it cheaper or they will get sued by the companies. I guess i should have said I am a hair stylist. If you don't want to pay that much citra shine is similiar. I smells really good too. THey are all protein oils that simulate hairs natural oils. JUst be careful a tad will go a loooong way. IF you use too much you will end up with one slick puppy. hee hee. I know that biosilk is about twenty dollars for the large bottle but it should last for atleast a year. I have no Idea about the cost of the other product. I hope this helps. Connie: