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BARIUM SULFATE.

Valuable CAS 7727-43-7 / COLORANT, OPACIFYING

A sophisticated inorganic salt used in high-performance skincare to provide immediate optical correction and structural support. This stable mineral compound serves as both a high-refractive index blurring agent and a biological catalyst for barrier repair.

Opacifying agent Barrier repair catalyst Light-diffusing pigment Texture enhancer

Science

Beyond its role as a pigment extender, barium sulfate with a negative surface charge interacts with the skin's electrical potential. It modulates epidermal ion gradients—specifically calcium and magnesium—to trigger the rapid release of lamellar bodies, which are essential for synthesizing the lipid barrier and preventing epidermal hyperplasia.


Research

High confidence
Effective range 0.07–37%
Optimal

20%

Key findings

  1. 01 Demonstrated a 60.7% recovery rate in skin permeability barrier function compared to 37.5% in controls (British Journal of Dermatology, 2004).
  2. 02 Plate-like crystal structures at 20% concentration provide superior light diffusion with over 85% light transmittance (Shiseido Research).

Transparency

Not commonly dusted
Min. effective
0.5%
Red flag below
0.1%

While often used as a simple opacifier at low levels, clinical evidence suggests significant barrier-recovery benefits at concentrations as low as 0.67mg/ml. It is rarely 'dusted' because even at low concentrations, it provides functional texture improvements.


The Formula

Solubility
Unknown
Optimal pH 6.5 – 10
0 7 14

Stability

An exceptionally stable inorganic salt that is insoluble in water and organic solvents. It requires careful dispersion to prevent settling but remains chemically inert across most cosmetic environments.

Synergies

  • Titanium Dioxide
  • Iron Oxides
  • Magnesium ions

Conflicts

  • Concentrated sulfuric acid
  • Strongly acidic environments (pH < 4.0)

Safety

CIR Status
Safe as used
Max tested
37%
Pregnancy
Safe
Sensitization risk Low

Safety is contingent on the purity of the manufacturing process to ensure no residual acidic salts are present.


Your Skin

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

Our Assessment

Valuable

An underrated multifunctional mineral that bridges the gap between instant cosmetic blurring and long-term biological barrier reinforcement.


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