Avobenzone is a chemical compound commonly used in sunscreens to absorb and filter ultraviolet (UV) rays. It is known for its ability to absorb UVA rays, which are associated with skin aging. Here are the general materials and methods used in the production and formulation of products containing Avobenzone:
Materials:
Avobenzone (Butyl Methoxydibenzoylmethane): This is the key ingredient, responsible for absorbing UVA rays.
Solvents: Various solvents may be used to dissolve Avobenzone and create a stable solution. Common solvents include ethanol, octocrylene, or other organic solvents.
Stabilizers: Antioxidants such as vitamin E may be added to prevent the degradation of Avobenzone due to exposure to sunlight.
Emollients and Emulsifiers: These are used to improve the texture and spreadability of the sunscreen. Common emollients include oils, and emulsifiers help blend oil and water components.
Preservatives: To prevent the growth of microorganisms in the sunscreen product.
Fragrances and Colorants: These are added for aesthetic purposes to enhance the product’s appeal.
Methods:
Weighing and Mixing: The raw materials, including Avobenzone, solvents, stabilizers, emollients, emulsifiers, preservatives, fragrances, and colorants, are accurately weighed.
Dissolving Avobenzone: Avobenzone is dissolved in a suitable solvent to form a stable solution.
Emulsion Formation: If the sunscreen is in the form of a cream or lotion, an emulsion is created by combining oil and water phases. Emulsifiers help in stabilizing this mixture.
Heating and Cooling: The mixture may be heated and then cooled to ensure that all components are well-blended and the product has a uniform consistency.
Addition of Stabilizers and Antioxidants: Stabilizers and antioxidants, such as vitamin E, are added to prevent Avobenzone from breaking down due to exposure to UV light.
Preservation: Preservatives are added to prevent the growth of bacteria, mold, or other microorganisms in the product.
Quality Control: The final product undergoes quality control checks to ensure it meets safety and efficacy standards.
It’s important to note that specific formulations and methods may vary among sunscreen manufacturers. Additionally, advancements in cosmetic science may lead to new techniques or ingredients being used in sunscreen formulations.