Science
Mechanism of Action
This ingredient functions primarily as a powerful absorbent due to its highly porous structure, acting like a sponge to soak up sebum, dirt, and grime from both the skin's surface and within pores. Its high cation exchange capacity further enhances its ability to capture and remove various pollutants, including heavy metals. Beyond absorption, Solum Fullonum aids in the gentle removal of dead skin cells, surface debris, and microbes, contributing to a smoother and clearer complexion. In cosmetic formulations, it also serves as an anticaking agent, bulking agent, gel former, opacifying agent, and viscosity controller, swelling significantly upon hydration.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
As a fine particulate clay, Solum Fullonum can become airborne. The Cosmetic Ingredient Review (CIR) Expert Panel advises that formulations likely to be incidentally inhaled should be designed to minimize airborne particles, citing documented pulmonary damage risks associated with direct occupational inhalation of dusts.
The Formula
Formulation
Stability
Solum Fullonum is not truly soluble but disperses readily in water, forming a paste, and swells considerably upon contact with moisture. It also possesses buffering capabilities, aiding in pH maintenance within a formulation. No specific optimal pH range for its stability in skincare was indicated in the research.
Safety
Safety Profile
The CIR Expert Panel has concluded that Fuller's Earth is safe for use in cosmetics and personal care products, provided incidental inhalation is minimized in dusting formulations. While generally non-irritating to the skin, direct eye contact can cause irritation due to its solid particle form. Certain individuals, particularly those with sensitive skin, may experience minor irritation or dryness with high concentrations, prolonged, or repeated exposure, thus patch testing is recommended. It is important to distinguish Solum Fullonum from 'Fullerenes,' which are distinct carbon molecules. Some components found within Fuller's Earth, such as Calcium Silicate, have been reviewed by the FDA and listed as Generally Recognized As Safe (GRAS) for specific food additive uses.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Solum Fullonum is a valuable absorbent clay, highly effective for purifying and detoxifying formulations, making it particularly beneficial for oily and normal skin types seeking clarity and balance.
Related
Similar Ingredients
Finding similar ingredients…