Hyaluronic Acid

Hyaluronic acid is a polysaccharide, polymer of glucuronic acid and N-acetylglucosamine. It is a natural ingredient, greatly hydrophilic,

which can attract and hold water up to 1,000 times its weight. It is a main component of the matrix of theacid skin, it is found in the human connective tissue and in extracellular material. The hydrophilic property of hyaluronic acid is essential for maintaining the necessary skin moisture, and other tissues, as we shall see below. The greater amount of HA is in the skin tissue: about 7-8g to each adult, corresponding to approximately 50% of the entire body (the remainder is located in the eyes and bone joints). The skin contains 0.5mg / ml and the skin contains 2 – 4mg / ml HA. The half-life time of hyaluronic acid in the skin is less than one day. 1/3 of the total HA in the body is lost and replenished daily.

The amount of hyaluronic acid decreases over time, reaching 50% of the initial amount of life at the age of 40 years, and after 60 years drops to nearly 10%. This reduction is observed throughout the organism both to the skin and joints and eyes.

PROPERTIES

  • It controls the water content in tissues
  • Slows down the diffusion of water from the dermis in the skin, increasing skin hydration.
  • It offers elasticity and absorption by acting as a lubricant.
  • It allows the skin to better resistance to mechanical influences and traumas and epithelial cells increased migration. It helps in the formation of skin cells and replacing the damaged. This is evidenced by the large amount of HA found in wounds, burns and other skin damage.
  • It helps produce collagen and other substances involved in maintaining the skin structure.
  • It protects cells against free radicals and carry proteins and metabolites in the intercellular spaces.