What is Aquamid? Skin Treatment : Facial and Body Modern medical science has brought many positive advances into the public domain. One of the fastest-growing of these is aesthetic enhancement - the process of improving quality of life by ironing out the physical anomalies in our looks that we are unhappy with. Aquamid® is a transparent, injectable implant in hydrogel form. The hydrogel is composed of 97.5% sterile water bound to 2.5% cross-linked polymers. These have been used safely in biomedicine for decades.