What Are Dermal Fillers and How Do They Function? Whenever individuals visit a skin expert for anti-ageing treatment, they often get recommendations for dermal fillers. These dermal fillers, usually called fillers, are non-invasive medical procedures for skin rejuvenation. In Delhi, Dr. Rajat Gupta, a qualified skin specialist performing this treatment at Skination Clinic, says that usually people in search of youthful skin are afraid of filler treatment cost in South Delhi. But the fact is, a one-time investment in the treatment may give cost-effective results for a longer period of time. In this regard, this blog is going to disclose a short yet significant study of filler treatment for all to know about. So read the post carefully. What are Fillers? Fillers are injection-based skin treatments. This non-invasive skin rejuvenation method uses injections of natural or skin friendly chemical fillers. The injected fillers in the skin work on the damaged skin cells and repair the tissue, activating the collagen.