To develop a popular sunscreen formula, generally consider the following technical points: selection and compatibility of sunscreens, oils; the combination of sunscreen synergist and film forming agent; Selection of emulsification systems; Skin feel, the addition of ingredients, etc. So, what role do silicone materials play in sunscreen formulations?
Refreshing effect - volatile silicone oil
Sunscreens with strong sun protection ability, usually in a solid state, need to be combined with liquid grease sunscreens with moderate solubility when designing refreshing sunscreen formulations, while adding highly volatile silicone oils to provide a refreshing skin feeling, especially in W/O formula systems.

Sunscreen waterproofing and efficiency enhancement - silicone film former
The use of W/O system sunscreen, because most of the sunscreen is in the outer phase oil phase, the sunscreen ingredients can be continuously spread, while the O/W system oil-soluble sunscreen stays in the oil phase, and the sunscreen is easy to disperse discontinuous after application, resulting in a "window effect", thereby reducing the sunscreen effect. Therefore, it is necessary to match water-soluble sunscreens and add film-forming agents to enhance the waterproof and sunscreen effect of the formula.

Guardian of system stability - silicone emulsifier
Silicone emulsifiers are commonly used in W/O emulsification systems, general emulsifiers with strong emulsifying ability, large molecular weight, large hydrophilic and lipophilic groups, and thick skin feeling when used. Compared with emulsifiers with small molecular weight, the emulsifying force and stability will be weaker, but the skin feeling will be refreshing, and the formula design needs to be used together.

Skin feeling regulator - silicon powder
The birth of powder raw materials provides more skin style for sunscreen products, commonly used powder raw materials are: silicon powder, which can improve the smoothness of the skin; Complex silica powder makes the skin feel soft and more adherent.

Improved compatibility and adhesion – phenyl silicone fluids, alkyl silicone waxes
The molecular polarity of organic sunscreens is generally high, so when choosing grease, it is necessary to select medium to high polarity oil, phenyl silicone oil and alkyl silicone wax is a polymer containing hydrocarbon branch structure on the silicone oil chain, and high polarity grease compatibility is better, the addition of phenyl silicone oil, alkyl silicone wax can increase the compatibility between oil phase system oils, improve the skin adhesion of the product.