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CALCIUM SODIUM BOROSILICATE.

Valuable / BULKING

A sophisticated, inert mineral glass used to refine skin texture and bolster environmental defense. These high-precision microspheres provide an immediate soft-focus finish while physically augmenting the skin's resistance to light-induced damage.

Optical Diffuser Blue Light Shield SPF Booster Mattifying Agent Bulking Agent

Science

Utilizes a specialized hollow flake or microsphere geometry to scatter and diffuse incident light, effectively blurring the appearance of pores and fine lines. Beyond its optical properties, it functions as a physical shield that reflects short-wavelength High-Energy Visible (HEV) light and enhances the efficacy of mineral UV filters through increased light scattering. Its high surface area also allows for controlled sebum adsorption, maintaining a matte profile.


Research

High confidence
Effective range 0.8–97%
Optimal

5%

Key findings

  1. 01 Clinical data indicates that a 5% concentration provides measurable protection against HEV (blue light) while simultaneously increasing the SPF rating of mineral sunscreens.
  2. 02 Human Repeat Insult Patch Tests (HRIPT) on formulations containing 53% concentration confirmed the ingredient is non-sensitizing.
  3. 03 4-week clinical use studies of products featuring up to 97% concentration showed zero irritation across test subjects.

Transparency

Not commonly dusted
Min. effective
1%

Typically utilized as a functional bulking agent or optical modifier at significant percentages; however, its protective benefits against blue light require concentrations of at least 5%.


The Formula

Solubility
Neither
Optimal pH 5 – 8
0 7 14

Stability

An exceptionally stable glass mineral that remains insoluble and chemically inert within the formula. It is heat-stable up to 900°C and does not react with other cosmetic actives.

Synergies

  • Zinc Oxide
  • Titanium Dioxide

Safety

CIR Status
Safe as used
Max tested
97%
Pregnancy
Safe
Sensitization risk Low

As a chemically inert substance that does not penetrate the skin barrier, it is considered safe for all demographics, including during pregnancy.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

A multi-dimensional mineral additive that provides essential blue light protection and immediate visual skin refinement without irritation.


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References