12/30/2022 0 Comments Silica in skin care![]() ![]() Silica has several different functions in cosmetic and skincare products, including as an abrasive in scrubs, an absorbent powder, anticaking agent, bulking agent, opacifying agent, and suspending agent. There are also silica dietary supplements which is a whole other conversation. Keep an eye on:Keep in mind that there are a number of forms of silica, this determines their use. Synergetic ingredients:Works well with most ingredients Who is it for?All skin types except those that have an identified allergy to it. The risk to cosmetic or skincare users is negligible. ![]() This risk is relatively low nowadays as the safety protocols in place are far more stringent. The not so good:Silica has been linked with lung issues however this relates mostly to old manufacturing processes. Silica also helps pigment to be distributed evenly, prevent shine and help your foundation adhere and stay on the skin. The good:Helps to improve the texture and feel of a formulation. For the following discussion on the functions of silica, we will be referring to amorphous silica. The most common form of silica used in cosmetics and skincare products is amorphous silica. Additionally, hydrated silica easily forms gels, which is why this ingredient is sometimes used in liquid foundation products. The primary use for hydrated silica is in toothpastes since it is mildly abrasive, which helps to clean teeth. Hydrated silica is another version which is a derivative of silicon dioxide. Thus, crystalline silica is not used in cosmetics or skincare products. Crystalline silica has also been linked to a variety of health hazards, which we will discuss below in the safety section. There are many forms of silica that exist in nature that are used for different functions.Ĭrystalline silica is the form used in grinding, sandblasting, masonry projects, etc, and is highly abrasive. What are the Best Skin Care Products of 2022? Silica is generally colorless to white and insoluble in water. Additionally, silica can be found abundantly in sandstone, clay, and granite, as well as in parts of plants and animals. You’re probably most familiar with silica in the form as quartz, which is the most common component of sand in many parts of the world. After oxygen, silicon is the second most abundant element in the Earth’s crust, however, it very rarely occurs in nature as its pure form, rather, 90% of the Earth’s supply of silicon occurs as silica. ![]() Silica, also known as silicon dioxide, is an oxide of silicon, the 14th element on the periodic table of elements. In skincare and cosmetic formulations silica is used as an abrasive ingredient and to improve the texture and function of the product. ![]() Silica is widely used in a variety of cosmetics and skincare products due to its multi-functioning nature. For controlling these two properties simultaneously, an amphiphilic alpha,omega-methacrylate terminated PEO-PDMS-PEO triblock copolymer was synthesized as a surface-active macromer, and showed its usefulness in controlling phase separation and improving oxygen permeability and EWC, at the same time, of the hybrid hydrogels.Silica is a mineral that occurs naturally in the body’s processes of producing collagen and reducing inflammation. Although properties such as EWC and oxygen permeability of the hybrid hydrogels could be tailored over a wide range, the formulations with the PDMS macromer could not increase both EWC and oxygen permeability of the hybrid hydrogels without sacrificing one of them. Due to obvious incompatibility of hydrophobic tris(trimethylsiloxy)-3-methacrryloxypropylsilane (TRIS) and hydrophilic 2-hydroxyehtyl methacrylate (HEMA) or N-vinyl pyrrolidone (NVP) monomers, alpha,omega-methacrylate terminated poly(dimethyl siloxane) (PDMS) macromer was employed as a compatibilizer in the formulations, resulting in high optical transmittance (> 90% at 400 nm) of the hybrid hydrogels. #Silica in skin care freeSiloxane-containing transparent hybrid hydrogels, coupled with high oxygen permeability and moderate equilibrium water content (EWC), were successfully obtained through free radical bulk copolymerization of hydrophobic and hydrophilic monomers. ![]()
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