Light-reflecting effect - Glowing or Shimmer

Here are some commonly used light-reflecting particles:

1. Mica: Mica is a naturally occurring mineral that is often used in cosmetics for its light-reflecting properties. It's typically finely milled and can give products a shimmer or sparkle. Mica is used in many different products, from eyeshadow and highlighter to body lotions and hair care products.

2. Titanium Dioxide: This white mineral is often used in cosmetic products for its ability to reflect light. It's typically used in smaller amounts due to its intense white color. Titanium dioxide is also a common ingredient in sunscreen because of its ability to reflect UV light.

3. Zinc Oxide: Like titanium dioxide, zinc oxide has light-reflecting properties. It is also used as a physical sunscreen and can be found in cosmetics designed to provide sun protection.

4. Bismuth Oxychloride: This compound has a pearl-like effect and is used in cosmetics for its ability to reflect light and give the skin a luminous appearance.

5. Silica: Silica is often used in cosmetics as a light diffuser. It has the ability to scatter light, reducing the appearance of fine lines and wrinkles and giving the skin a soft, radiant look.

6. Boron Nitride: This synthetic compound is used for its ability to reflect light and give a soft-focus effect. It can be found in products like foundation, eyeshadow, and highlighter.

7. Synthetic Fluorphlogopite: This synthetic form of mica is often used in cosmetics for its light-reflecting properties. It's smoother and more transparent than natural mica, which can give a more subtle luminous effect.

8. Aluminum Powder: This is a metallic substance used in cosmetics, especially in eyeshadows, for its light-reflecting properties.

9. Iron Oxides: These are often used in conjunction with other light-reflecting particles to add color while also providing a shimmering effect.

Please note that while these ingredients are generally safe for use in cosmetics, some people may have individual allergies or sensitivities to certain ingredients.