I use the hyaluronic gel three times a week night to inject it with an ultrasonic device (3MHz) in the facial skin. This is relatively sensitive. Is, I am inclined to redness and irritation, sometimes even small pimples to join. Therefore, I must always be careful when ewas cosmetic products. The gel I do not tolerate well. The skin feels after the application of supple and smooth. Since I prefer this treatment for only two weeks, I can not say anything yet about long-term results.