News Letter

The global beauty market is now driven by a powerful movement toward inclusivity. A product lineup that embraces all ethnicities and skin tones is no longer optional — it has become an essential strategy for brand survival.

In particular, for those preparing to enter the U.S. OTC market, a sophisticated formulation designed for deep skin tones can be your strongest competitive advantage. However, combining SPF 50 high-level protection, flawless coverage, and the richness and clarity of dark shades within a single formula has long remained a “formulation challenge” for researchers.

Sunjin Beauty Science now unveils a foundation solution that overcomes this long-standing technical hurdle.

❓ What Makes Formulating an SPF 50 Dark Shade Foundation So Challenging?

In general, to achieve vivid color expression in dark shades, the amount of TiO₂ — which provides UV protection and contributes to a whitening effect — must be significantly reduced. However, doing so results in a noticeable decrease in coverage and makes it difficult to maintain sufficient sun protection.

In addition, increasing the level of inorganic powders to compensate for the reduced performance causes the viscosity of the formulation to rise sharply. This results in a heavy, draggy skin feel, making it commercially unviable as a finished product.

Sunjin Beauty Science has successfully developed an OTC Deep-Shade Mineral Foundation that simultaneously achieves four critical performance factors — UV protection, coverage, deep shade clarity, and superior skin feel — through its proprietary raw material technology.

1. The Key to Transparent Protection and Low Viscosity: ZINA-AS

ZINA-AS, used as the UV filter, is a highly transparent form of ZnO engineered for maximum clarity.

*Key Feature: Ultra-Low Viscosity
Even at a 75% dispersion concentration, it maintains exceptionally low viscosity — an innovative breakthrough in mineral UV technology.

*Benefits:
It delivers strong UV protection without interfering with the foundation’s natural tone, while providing a lightweight, smooth, and comfortable application

2. The Perfect Balance of Protection and Coverage: TA-90

Dual Function: By maximizing the inherent advantages of TiO₂, TA-90 delivers powerful UV protection and excellent coverage simultaneously. It enables the desired level of coverage while helping to minimize color interference in deep-shade formulations.

3. Innovative Dispersion Without the Need for a 3-Roll Mill: The TINA Series

The TINA Series, used as the pigment system, represents Sunjin’s advanced technological expertise in natural pigments.

* Stable Integration:
These natural pigments are created through chemical bonding, ensuring exceptional stability within the formulation.

* Outstanding Dispersion:
They offer superior dispersibility, preventing streaking or banding even without a 3-Roll Mill process.

* Long-Lasting Performance:
Thanks to excellent adhesion and dispersion stability, deep shades remain vivid throughout the day without darkening, delivering a true long-lasting effect.