Our Jows are made with only authentic Chinese herbs unlike other brands. The Dit Da Jow formula used is a passed down Shaolin Kung Fu recipe over 400 years old. Our Dit Da Jow Bruise liniment is made with 15 years of experience in herbology and is aged over seven years before it leaves our store. Our Jow comes in 4 oz amber glass bottles not in plastic or clear 1 oz or 2 oz bottles. This way you get quality & quantity because plastic bottles release chemicals which break down the Jow and clear bottles allow light to enter which breaks down the Jow. Both of which are undesirable and make the Jow less potent and less effective.