Hyaluronic acid, HA, also known as hyaluronic acid, special water sempping, is the best moisturizing substance found in nature, and is also recognized in the world. It has superior water absorbing capacity, which can absorb water from 1 000 times the volume. The hyaluronic acid is present in the skin, and it is one of the main matrix components of the human skin. It combines protein polysaccharide molecules that are more molecular weight, forming a gel-like structure of hyaluronic acid-protein-water, is to keep skin tissue moisture. An important component.
The hyaluronic acid in the leather provides space and nutrients for collagen and elastic fibers, together forming a scaffold, is an important extracellular matrix of suede, fusion, and elasticity .
Molecular weight classification
According to the different molecular weight, hyaluronic acid can be divided into high molecular weight hyaluronic acid (higher than 2 × 106 DA), medium molecular weight hyaluronic acid (0.5’2 × 106 DA), low molecular weight hyaluronic acid (10K “500 kDa) And oligomeric hyaluronic acid (What is oligomeric hyaluronic acid
Oligomeric acid (HA-Oligo), also known as ultra-low molecular weight hyaluronic acid. It is a hyaluronic acid molecular weight (less than 10000 da) hyaluronic acid molecular fragment prepared by hyaluronic acid degradation. The study found that HA-OLIGO can quickly penetrate the following, providing a long-lasting skin moisturizing effect, and hyaluronic acid is a component of the human body, with good biological compatibility, so Ha-Oligo is a kind of available All-round moisturizing, anti-aging new hyaluronic acid products .
The effect of oligomerous hyaluronic acid
Milot hyaluronic acid does not pass through the normal skin barrier, but a layer of gas permeable film is formed on the surface of the skin, so that the skin is smooth and moist, and can block the intrusion of external bacteria, dust, and ultraviolet rays, protect the skin from infringement; and small molecular weight and Ultra-low molecular weight (less than 10000da) hyaluronic acid can penetrate the leather through normal skin barrier, with a suppression of inflammatory response, promote blood vessel production, improve intermediate metabolism, promote nutrient absorption, anti-wrinkle and other repair effects.
Oligible hyaluronic acid (ultra-low molecular weight hyaluronic acid) can penetrate the skin barrier to enter the leather, participate in leather collagen and elastic fiber metabolism, provide moisture and nutrients, increase the skin’s elasticity .
In various in vitro experiments, collagen synthesis (+ 100%), glutamine transamine activation (+ 100%) and matrix metalloproteinase activity were reduced (- 15%) (below). 
This can be explained in the body to find the result of the anti-wrinkle effect of VLMW HA (ultra-low molecular weight hyaluronic acid), because collagen is part of the extracellular matrix responsible for skin intensity, transginamide enzyme involved in collagen fiber Correctly tissue and orientation, and matrix metalloproteinase can reduce collagen fiber. 
Oligible hyaluronic acid (ultra-low molecular weight hyaluronic acid) has the following advantages and effects:
Oligible hyaluronic acid can be accepted, deep moisturizing, and improve the moisture content of the skin.
Use with macromolecular HA, can synergize, get better moisturizing effects.
2. Repair damaged cells:
Oligible hyaluronic acid can repair damaged cells to increase cell activity, thereby reducing the damage of the external environment on the skin.
3. Clear free radicals:
Oligible hyaluronic acid can effectively eliminate sunshine-induced reactive oxygen free radicals, enhance cell antioxidant capacity, and improve the skin’s defense for UVB.
Long-term use of skin care products containing oligomeric acid, improve skin elasticity, improve skin barrier function, desalination of wrinkles, and achieve anti-aging effect.
One study explores the effect and safety of hyaluronic acid dressing to improve skin foundation state, the results show that the hyaluronic acid dressing of different molecular weights can improve the moisture and elasticity of the skin, and the subject satisfaction is high and safe. 【1】
Here you recommend a good, large and medium-sized, ultra-low molecular weight, poetic hyaluronic acid dressing (mask)
If you want to apply a variety of efficacy, please select a hyaluronic acid dressing of multiple molecular weight hyaluronic acids.
 Zhao Qi, Ma Huimin, Xu Jiai, et al. Study on the influence of hyaluronic acid dressing on the basic state of skin [J] .Journal of Practical Dermatology, 2016 (2): 104-106.
 Guo Xueping, Lu Li, Liu Wenqing. Application of oligomeric hypervonic acid in cosmetics [C] // International Japanese chemical industry seminar.
 Muthny T, Papez T. The Many Faces of Hyalururonan [J]. Household and Personal Care Today, 2012, 7: 4.