Science
Mechanism of Action
This ingredient functions as an optical brightener by absorbing ultraviolet (UV) light, specifically in the 340-370 nm range, and subsequently re-emitting it as visible blue light, typically between 420-470 nm. This phenomenon, known as fluorescence, allows it to counteract yellowish undertones on the skin, creating an immediate visual perception of enhanced whiteness and brightness. Its action is entirely physical, modifying how light interacts with the skin's surface without engaging biological processes in skin cells or pigmentation pathways.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Fluorescent Brightener 367 presents as a yellowish-green crystalline powder exhibiting excellent resistance to both light and heat, alongside robust chemical stability. It demonstrates good compatibility with various macromolecules, shows no exudation phenomenon, and remains inert when formulated with foaming agents or cross-linking agents.
Safety
Safety Profile
The Government of Canada has concluded Fluorescent Brightener 367 poses no harm to human health at assessed levels, basing this on a read-across approach with a similar, well-studied chemical. It is recognized as a UV absorber within the EUCOSMETICS inventory. However, it is advised to avoid its use on compromised skin with wounds, as it may interact with proteins and potentially impede the healing process. The FDA generally suggests conducting patch tests for products containing optical brighteners to identify any individual sensitivities prior to widespread application.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Fluorescent Brightener 367 is an optional ingredient valued for its immediate, non-biological optical brightening effect, providing a visual enhancement to skin appearance, though clinical efficacy data on sustained skin benefits is currently insufficient.
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