this review title is: no serum just liquid and the content is: yesterday i tried making a serum i used level tsp of the hyaluronic acid and oz of water this is a recipe i have used in the past it was only liquid so i added a little more lmwha to the mixture it is still liquid today the water was right out of the fridge and it was shaken in a bottle and i waited for the bubbles to go away today i will try the recipe given in the answered questions if it is any better i will change my stars made another batch this morning it also is just water no viscosity to it.there are other information for this review, one is this reviewer did purchase it and the other is 0 people think this review is helpful.