Science
Mechanism of Action
This ingredient operates as a mild amphoteric surfactant, reducing the surface tension of water to efficiently lift and wash away oils, dirt, and other impurities from the skin and hair. Beyond cleansing, it serves as an effective emulsifying agent, promoting the stable integration of water and oil-based components within formulations. Furthermore, it forms a fine film over the skin and hair, providing conditioning benefits by minimizing moisture escape. It is also noted for its capacity to soothe skin, mitigate redness, and support accelerated skin recovery, particularly benefiting sensitive and acne-prone skin types.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Human Repeat Insult Patch Tests (HRIPT) using 2.2% active in a foaming face wash and 3.5% active in a shampoo (both for the chemically similar sodium lauriminodipropionate) found no evidence of delayed contact hypersensitivity.
- 02 Ocular toxicity studies in humans with 3.56% active sodium lauriminodipropionate in shampoo did not induce ocular lesions or a significant increase in tear albumin levels.
- 03 A developmental study in rats showed no embryotoxic or teratogenic effects when disodium lauriminodipropionate was used at 1.5% in a hair dye formulation.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Disodium Lauriminodipropionate demonstrates robust stability across the entire pH range of 0 to 14. It maintains its integrity and performance in both acidic and basic mediums, in hard water, and when formulated with diverse active ingredients.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Disodium Lauriminodipropionate, along with its related acid and monosodium salt, is safe for use in cosmetics under current practices and concentrations. The Environmental Protection Agency (EPA) has further classified this ingredient as a 'safer chemical' (green half-circle), indicating low concern based on experimental and modeled data. The maximum concentration of 3.5% is derived from human safety studies of the chemically similar monosodium salt, with the disodium salt expected to exhibit comparable safety. Animal studies at 1.5% indicate no embryotoxic or teratogenic effects.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Disodium Lauriminodipropionate is a highly valuable ingredient, offering mild yet effective cleansing, emulsifying, and conditioning benefits, supported by a strong safety profile and broad compatibility across all skin types, including sensitive skin.
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