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TITANIUM DIOXIDE.

Essential CAS 13463-67-7 / COLORANT, OPACIFYING, UV ABSORBER, UV FILTER

Titanium Dioxide is a naturally occurring mineral compound widely utilized in precision skincare for its multi-functional benefits. It serves as a highly effective broad-spectrum UV filter, creating a physical barrier that reflects harmful UVA and UVB radiation, while also providing a desirable mattifying finish and opacification in cosmetic formulations.

Summary

UV Filter UV Absorber Opacifying Agent Cosmetic Colorant Mattifying Agent Anti-inflammatory

Science

Mechanism of Action

On the skin's surface, Titanium Dioxide forms a protective mineral shield that physically reflects and scatters incoming ultraviolet (UVA and UVB) radiation, thus preventing cellular damage. Its microporous texture contributes to a mattifying effect by absorbing and dispersing excess sebum. Furthermore, in vitro studies suggest it may possess anti-inflammatory properties through its ability to neutralize reactive oxygen species (ROS).

Research

Clinical Evidence

High confidence
Effective range ≤25%
Optimal

25%

Key findings

  1. 01 Considered safe and effective as a UV-filter for dermal application on healthy, intact, or sunburnt skin at concentrations up to 25%.
  2. 02 Demonstrated significant inhibition of bovine serum albumin (BSA) denaturation in vitro at concentrations from 31.25 µg/mL to 500 µg/mL, suggesting anti-inflammatory activity.

Transparency

Dusting Analysis

Commonly dusted

The Scientific Committee on Consumer Safety (SCCS) advises against the use of Titanium Dioxide in formulations that may lead to inhalation exposure, such as general spray products and loose powders, due to observed potential lung inflammation in animal studies. However, specific use limits for pigmentary Titanium Dioxide in hair styling aerosol sprays are 1.4% for general consumers and 1.1% for professional users.

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Titanium Dioxide is insoluble in water, most organic solvents, and inorganic acids, with slight solubility in alkali. Formulations with concentrations exceeding 10% may face stability challenges. To maintain SPF efficacy, the cosmetic sample's pH should avoid the 5.0-8.5 range, as this has been shown to cause particle agglomeration and reduce UV protection, with the lowest SPF values observed between pH 6.0-7.5.

Conflicts

  • Alpha-hydroxycarboxylic acids (specifically in oil-in-water emulsions, where instability and solubility issues have been noted)

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
25%
Sensitization risk Low

The FDA approves Titanium Dioxide as both a physical sunscreen agent and a cosmetic colorant. The SCCS considers it safe for dermal application as a UV filter at concentrations up to 25% on healthy skin, and for use in loose powders up to 25% for general consumers. However, caution is advised for products leading to inhalation exposure due to animal study findings. The SCCS is currently re-evaluating the safety of Titanium Dioxide in cosmetic products, particularly concerning oral and inhalation exposures, with an updated opinion expected by September 2026.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Essential

Titanium Dioxide is an essential mineral ingredient, offering broad-spectrum UV protection and beneficial cosmetic properties with a low risk of irritation, making it highly suitable for a wide range of skin types when used in appropriate dermal formulations.

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