Glitter eyeshadows and high-impact highlights—products built around highly visible pearlescent particles—remain an important choice across many makeup looks and styles.
At the same time, another approach to the use of “light” is gaining momentum.
As product formats such as serums, sprays, and lip oils continue to diversify, more formulations are incorporating subtle, suspendable light-reflecting elements, allowing luminosity to move beyond traditional color cosmetics and into fluid and semi-fluid systems.
Within this gradual segmentation of light-expression approaches, Inner Glow has emerged as a distinct trend direction. It is characterized by a barely perceptible, buildable sheen that is best appreciated at close range, delivering a more skin-integrated, inner-lit appearance. This trend also places higher demands on particle structure, dispersion stability, and overall system compatibility.
The K-beauty trend of #InnerGlow popularised highlight layering techniques, emphasising new categories to explore, including highlighting primers and toppers (TikTok, January 2025)
It is within this application context that certain non-pearlescent, “self-luminous” powder materials are being increasingly adopted for the construction of visual effects.
Rather than relying on pronounced sparkle or discrete flash points, these materials achieve a stable and refined luminosity through the reflection and diffusion of light driven by their intrinsic particle structures, maintaining a consistent appearance across viewing angles.
Synthetic fluorphlogopite, bismuth oxychloride, and large-particle, shimmer-grade boron nitride are among the representative examples of this category.
While their structures and optical behaviors differ, each provides a distinct pathway for delivering fine, subtle light effects in systems such as serums, sprays, and lip oils.
1. Synthetic Fluorphlogopite
Structured, Soft-Focus Luminosity with Stable and Controllable Performance
Synthetic fluorphlogopite is a cosmetic-grade, plate-like inorganic material produced through high-temperature, oriented crystallization. It features a highly ordered crystal structure, high purity, and low impurity content.
Compared with natural mica, synthetic fluorphlogopite exhibits a more uniform distribution of platelet size and thickness, resulting in a stable and controllable optical performance. Its plate-like morphology also contributes to improved spreadability and skin adhesion, enabling a more even and natural-looking finish.
Optical Characteristics:
This material offers excellent light reflection and diffusion capabilities, delivering a refined, soft luminosity in both complexion and color cosmetic systems. It effectively enhances visual clarity and dimensionality without introducing harsh sparkle.
Application Scenarios:
Primers: Visually refines skin texture and softens the appearance of pores and fine lines.
Pressed Powders: Provides delicate, soft shimmer on the skin, creating a smooth and translucent finish.
Foundations: Improves overall clarity and uniformity of the makeup film, contributing to a naturally dimensional glow.
Setting Sprays: Forms a fine, even soft-focus luminous layer on the makeup surface, enhancing transparency and overall refinement.
Formulation Guidance:
Recommended for water-based and aqueous-dispersed systems.
2. Bismuth Oxychloride
Soft Metallic Luminosity with Clean, Controlled Reflection
Bismuth oxychloride is used in cosmetic formulations as a filler, skin-conditioning agent, and colorant (CI 77163). As a synthetic, non-toxic pearlescent pigment, it features a high refractive index and delivers a clear, clean luster. Its distinctive optical appearance and refined texture contribute multidimensional visual depth to cosmetic products.
Optical Characteristics:
Provides an inherent soft metallic luminosity with refined reflectance.
Delivers a smooth, particle-free sheen without visible sparkle or visual noise.
Creates a “micro-mirror”–like translucent glow in complexion formulations.
Application Scenarios:
Tone-up creams / Foundations: Natural brightness compensation with a controlled luminous effect.
Highlighters: Serves as a soft metallic luminous base.
Brightening loose powders: Adds a gentle, refined radiance to the skin.
Formulation Guidance:
Recommended for oil-based systems.
3. Large-Particle Boron Nitride
A Combined Experience of Luminosity and Tactile Performance
High-quality boron nitride is characterized by its exceptional whiteness and purity, offering a porcelain-like luster together with a soft, silky skin feel. It provides excellent spreadability, surface gloss, and skin adherence. As particle size increases, gloss intensity is enhanced, enabling a gentle yet refined shimmering effect without overt sparkle.
Optical Characteristics:
Its plate-like crystalline structure and high refractive index allow individual particles to form discrete reflection points under light, creating fine, scattered sparkles on the skin.
Inherent soft-focus properties integrate luminosity into the skin texture, producing a lively, subtle glow under lighting.
Enhances perceived brightness while simultaneously improving slip, smoothness, and overall skin feel during application.
Application Scenarios:
Complexion products: Natural brightness enhancement without visible glitter.
Pressed powders: Soft-focus brightening with fine, dispersed sparkle on the skin.
Lotions, creams, and facial oils: Enhanced “micro-luminous” effect.
Formulation Guidance:
Suitable for oil-based, water-based, and post-emulsification addition.
(When added after emulsification, increased emulsifier support is recommended to ensure adequate dispersion stability.)
Within these emerging applications of light, brands are placing increasing emphasis on the fineness of luminosity and its compatibility with different formulation systems and sensory requirements. Variations in particle structure, size distribution, and optical behavior directly determine the suitability of different powders for complexion, lip, body care, or skincare products.
As a result, materials such as bismuth oxychloride and synthetic fluorphlogopite are seeing broader and more differentiated use in products positioned around “everyday luminosity”.
Based on specific formulation needs, UNI-POWDER offers more refined guidance on powder selection, including recommendations on particle size combinations, system compatibility, dispersion approaches, and application direction—supporting formulators in achieving a balanced interplay between luminous performance and skin feel.
If you are developing relevant products, we welcome the opportunity to exchange ideas and are glad to offer more practical, formulation-focused support and guidance tailored to specific applications.
About UNI-POWDER
Shanghai Co-fun Biotech owns the registered trademark UNI-POWDER, one of China's leading suppliers of powder materials for cosmetics. Who focuses on researching, producing, surface treating, and applying high-performance cosmetic powders. Since our establishment in 2010, our goal at UNI-POWDER has been to prioritize customer centricity by providing one-stop-shop solutions using top-notch raw materials and formulations. Our product line includes the functional raw material for sunscreen, makeup, skincare, and powder customization services. We are committed to the spirit of craftsmanship; we hope that every makeup look can benefit from UNI-POWDER.
Post time: Jan-22-2026