Thank you for your interest in DS Laboratories' products.
We most certainly are not diluting ingredients in any of our shampoos. If you are referring to the latest product updates made to Revita shampoo, we are always looking for ways to improve our products and their effectiveness, so we update the formulas whenever we find a way to make them better.
We do try, as much as possible, to accommodate our customers' likes and dislikes and our R&D takes any and all feedback into close consideration. Some of our customers do prefer the latest formulation to previous ones. As mentioned above, every update is made with improved effectiveness in mind and is extensively researched before incorporation into our products.
Please let us know if we may be of further assistance.