Even though it seems to be the very latest in hydration, hyaluronic acid has actually been used in medicine for decades and has certain qualities that are much appreciated by specialists, including ophthalmologists.
In 1934, Palmer and Myer isolated hyaluronic acid from the vitreous humour of the bovine eye. Its name comes from the Greek hyalos (glass-like) and uronic (for its uronic acid content). In 1942, the first patent was registered for the use of hyaluronic acid as an egg substitute in cake-making, but where hyaluronic acid has really found a place is in medicine and cosmetics.
In the 1960s, it was applied in eye surgery (to temporarily keep the shape of the eyeball during cornea transplants) and started to be used in infiltrations for joint pathologies and also in cosmetics.
The first generation of preparations with hyaluronic acid reached the market in the 1980s. At the start it was extracted from rooster combs. Since 1997, most of the hyaluronic acid in use has been biosynthetic, formed by bacterial fermentation. This procedure avoids allergic reactions to any possible remnants of animal protein.
Hyaluronic acid is also present in the tissues and organs of the human body. The largest amount of hyaluronic acid is found in the skin, bones and intervertebral discs, in intercellular spaces, in the synovial fluid of joints and in the vitreous humour of the eye. The body of a person weighing 70 kg contains about 15 grams of hyaluronic acid, of which about 5 grams degrade and are recovered during the day. As the human body ages, its hyaluronic acid is destroyed faster than it is recovered.
Hyaluronic acid is available in many forms: injections, vials, creams, gel, capsules and drops. It is used today in many applications: from infiltrations to relieve joint pain to preparations to cure mouth ulcers.
Infiltrations in joints
Hyaluronic acid has a lubricating effect, so it can reduce the wear and tear on cartilage caused by rubbing and can relieve pain in pathologies such as osteoarthritis.
Hyaluronic acid can be injected into the skin and serves to smooth over wrinkles and give volume. Its effect lasts from 6 months to one year, because over time it is reabsorbed and disappears.
Hyaluronic acid is also present in many anti-ageing creams. Its main function is as a humectant to prevent water loss from the skin.
Hyaluronic acid is an outstanding humectant that has been used for decades as a component of some artificial tears to relieve the symptoms of dry eye. Today the best results are now being obtained by products that combine hyaluronic acid with other complementary humectants to generate synergies.
The use of hyaluronic acid in eye preparations has many benefits:
Acuaiss Dual Gel is a tear with a gel-type texture designed to relieve moderate-severe dryness. It contains 0.30% hyaluronic acid and a second humectant, 0.10% hydroxyethylcellulose. This combination makes the product’s viscosity and hydrating capacity greater than those of conventional tears.
In addition, the hyaluronic acid used in Acuaiss Dual Gel is almost 100% pure, guaranteeing very high effectiveness and tolerance.
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