What is Dr CYJ hair filler? DR. CYJ Hair Filler helps with hair loss prevention and scalp care. DR. CYJ Hair Filler is injected in the dermis layer at the site of the scalp depression in need of implantation for the correction of wounded scalp. Caregen UK Distributor   Buy Genuine Products Mesotreat is an Official UK Distributor of Caregen Products. In Stock, Fast Delivery Available