Description What is Dr Cyj Hair Filler? Dr Cyj Hair Filler is an injectable hyaluronic acid dermal filler used to stimulate hair growth. It is a clear and low viscosity solution, which contains amino acid peptides. It can also treat damaged subcutaneous tissue, caused by chemical, physical and traumatic effects of wounded scalp. What does the procedure involve? The product is injected into the dermis layer of the scalp using short, thin needles. The injections are relatively painless, but you will usually feel a slight pinprick. What are the results? Results can last around a year, but this can differ per client, dependent on a range of factors. You can explore our exciting and wide range of dermal filler products here.