TiO2 Free Pearlescent Pigment Custom

Why do TIO2 free pearlescent pigments reduce allergies and skin irritation compared to titanium dioxide-containing pigments?
TIO2 free pearlescent pigments may reduce the risk of allergies and skin irritation in certain applications, especially cosmetics and personal care products. Here are some reasons and related explanations:
Nanoparticle risks: Titanium dioxide in nanoparticle form may cause skin and respiratory problems. Although many studies have shown that nano-sized titanium dioxide is safe in most cases, its potential risks still exist, especially in sensitive skin or long-term contact.
Photosensitive reactions: Titanium dioxide is a photosensitive material that may produce free radicals when exposed to sunlight, resulting in photosensitivity reactions of the skin. Although this situation is not common, it may cause irritation or allergic reactions in particularly sensitive individuals.
Safety of use: TIO2 free pearlescent pigments usually use other natural minerals or synthetic materials (such as mica, iron oxide, chromium oxide, etc.) as the basis. These materials are relatively mild, less irritating to the skin, and safer.
Reduce allergic reactions: Because the chemical properties of these alternative materials are relatively stable, they are not easy to cause skin allergic reactions. Especially when used in cosmetics, choosing titanium dioxide-free pigments can reduce the risk of allergies for people with sensitive skin.
Better for sensitive skin: For people with sensitive skin or skin problems, titanium dioxide-free pigments may be a better choice. These pigments are usually carefully processed and purified to ensure that they are minimally irritating to the skin.
Cosmetics and skin care: In cosmetics and skin care, TIO2 free pearlescent pigments can be used in products such as eye shadow, lipstick, and foundation to provide gloss and color effects while reducing the possibility of skin irritation and allergies.
Regulations and certifications: Many countries have strict regulations and certification requirements for cosmetic ingredients. Titanium dioxide-free pigments that meet these regulations and standards can increase the market acceptance and consumer trust of the product.
Product claims and marketing: For consumers who are concerned about ingredient safety and skin health, the product can be clearly labeled as titanium dioxide-free and emphasize its friendliness to sensitive skin. This market strategy can attract more consumers who value health and safety.

Why do TiO2-free pearlescent pigments differ from TiO2-based pearlescent pigments in terms of brightness and color intensity?
The difference in brightness and color intensity between TiO2-free pearlescent pigments and TiO2-based pearlescent pigments mainly stems from the materials they are composed of and their optical properties. Here are the specific reasons and explanations:
TiO2-based pearlescent pigments: Titanium dioxide (TiO2) has a very high refractive index (about 2.4-2.7), which allows it to strongly reflect incident light. This high reflectivity is the main reason for the high brightness of TiO2 pigments. In pearlescent pigments, the high refractive index of TiO2 makes the pigment appear very bright and sparkling under light.
TiO2-free pearlescent pigments: Alternative materials such as mica, silica, etc. have a lower refractive index (usually around 1.5-1.7). These materials have a weaker ability to reflect light, so they provide less brightness, causing the pigment to appear less bright than the TiO2-containing pigment overall.
TiO₂-based pearlescent pigments: TiO₂ particles reflect and scatter a lot of light, making the pigment highly reflective. High reflectivity means more light is reflected back, increasing brightness.
TiO₂-free pearlescent pigments: Other materials have weaker reflective abilities and scatter light less effectively than TiO₂, so the overall brightness is lower.
TiO₂-based pearlescent pigments: TiO₂ not only provides high brightness, but also has excellent hiding power. It covers the base color well and enhances the saturation and color intensity of the pigment. The high hiding power of TiO₂ makes the pigment color more vivid and full.
TiO₂-free pearlescent pigments: Alternative materials such as iron oxide, chromium oxide, etc., although they can provide color, their hiding power is generally not as good as TiO₂. This means that in the same application, non-TiO₂ pigments may require more layers to achieve the same color intensity.
TiO₂-based pearlescent pigments: The morphology and distribution of TiO₂ particles optimize the reflection and interference effects of light, further enhancing the vividness and intensity of colors.
Pearlescent pigments without TiO₂: The particle morphology and distribution of other materials may not be as uniform as TiO₂, resulting in weaker reflection and interference effects of light, which in turn affects the intensity of color.
Pearlescent pigments based on TiO₂: The optical properties of titanium dioxide allow it to exhibit stronger color changes and reflection effects under different lighting conditions. This effect enhances the depth and visual impact of color.
Pearlescent pigments without TiO₂: Although they can also produce optical effects, due to their lower refractive index, their ability to reflect and refract light is not as good as TiO₂, resulting in weaker color changes and visual impact.