No, it is not necessary to use silicone materials in cosmetics. Silicone is a commonly used ingredient, which has various functions and benefits in cosmetics, such as humectant, stabilizer, oil absorber, etc. Its properties can provide specific effects and textures to meet different cosmetic needs.

However, the selection of ingredients in cosmetics is determined according to the characteristics, purpose and formulation design of the product. In addition to silicones, other ingredients can be used in cosmetics to achieve desired functions and effects. Cosmetic formulations usually contain a variety of ingredients, such as water, oil, surfactants, antioxidants, preservatives, fragrances, etc. The selection of these ingredients depends on the design and purpose of the product.

Therefore, cosmetics manufacturers will choose the right ingredients to achieve the desired effect according to the characteristics and needs of the product. Silicone is just one option, it has its specific benefits and functions, but it is not a required ingredient. Ultimately, the selection of ingredients in cosmetics should take into account multiple factors, including product performance, safety, sustainability, and regulatory requirements.