Hyaluronic Acid in Dermatology

Hyaluronic Acid in Dermatology. Hyaluronic acid (HA) is a major component of the extracellular matrix of the skin and plays an important role in the metabolism of the dermis. It has a key position in wound healing and tissue repair processes owing to its ability to maintain a humid environment favorable to healing and the stimulation of growth factors, cellular constituents, and the migration of various cells essential for healing. This review aims to describe briefly the physical, chemical, and biologic properties of HA, together with some details of the dermatologic indications of this unique molecule.

Hyaluronic acid-injectable fillers are used extensively for soft tissue volumizing and contouring. Many different hyaluronic acid-injectable fillers are available on the market and differ in terms of hyaluronic acid concentration, particle size, cross-linking density, requisite needle size, duration, stiffness, hydration, presence of lidocaine, type of cross-linking technology, and cost. Hyaluronic acid is a natural component of many soft tissues, is identical across species minimizing immunogenicity has been linked to wound healing and skin regeneration, and is currently actively being studied for tissue engineering purposes. The biomechanical and biochemical effects of HA on the local microenvironment of the injected site are key to its success as a soft tissue filler. Knowledge of the tissue-device interface will help guide the facial practitioner and lead to optimal outcomes for patients.  

1ml HA Filler Online

Key concepts and properties relevant to the production and performance of HA dermal fillers, such as the degree of crosslinking, gel hardness, gel consistency, viscosity, extrusion force, HA concentration, and extent of hydration are explained. New formulations of HA dermal fillers that have recently been approved by the US Food and Drug Administration differ from currently available HA fillers and may provide enhanced ease of extrusion and persistence over previous fillers.