The secret behind the formulation of sunscreen lotion

 Formulation of sunscreen lotion is a complex science and manufacturing process plays an important role in maximising the performance of permitted substances. There are certain important steps in the manufacture and formulation of sunscreen lotion.

• During the process of manufacture, ingredients like Cetyl alcohol and stearic acid are blended together and dispersed into the phase of oil.
• The water phase that contains emulsifiers and stabilizers like Veegum, Carbopol are separated.
• The two phases are then mixed in the form of emulsion which is aided by heating between 110 and 185 degree Fahrenheit. Although the temperature depends on the ingredients. This is an important phase in formulation of sunscreen lotion.
• The UV filters and absorbers are supplied like dry powder and are predisposed either in oil or aqueous bases. These micronized oxides are dispersed into the appropriate phase depending on the raw material and then being added to the product. You will need the support from surfactant chemical supplier.
• The mixing gets continued till the end, until the product becomes homogeneous. This is the secret behind the formulation of sunscreen lotion.
While you carry in the process of manufacturing, there arise a lot of problems and encounters.
• While mixing operations, the hydration of thickening and suspending agents is one of the most difficult of all. The incomplete hydration or formulation of all agglomerates can have a detrimental effect on the SPF.
• When you add the powdered ingredients, partial hydration of materials can build up the vessel walls.
• The emulsion has to be quite stable along with the minimum addition of emulsifiers and stabilizers. Certain additives can reduce the SPF as per knowledge. You must contact your surfactant chemical supplier beforehand.

For obtaining a homogeneous product, you might require additional equipment and other requirements. The improved dispersion of micronized oxides that uses Silverson high shear mixer results in the better quality of SPF.