Product Category: Daily Chemicals/Cosmetics

English Name: DL-1,2-Hexanediol

INCI Name: 1,2-Hexanediol

CAS NO: 6920-22-5

Molecular Weight: 118.1742

EC NO: 230-029-6

Packaging: 15 kg drum, 200 kg steel drum

Characteristics and Advantages as a Preservative: Mildness:

1,2-Hexanediol is a mild preservative. Compared to traditional preservatives, it has minimal skin irritation and almost never causes allergic reactions. This is because its chemical structure is similar to the skin's natural moisturizing factors, allowing it to function as a preservative while coexisting harmoniously with skin cells. In cosmetic formulations, even sensitive skin can tolerate products containing 1,2-hexanediol well.

Broad-spectrum Antibacterial Properties:

It has a broad antibacterial spectrum, inhibiting the growth of various microorganisms, including bacteria, yeasts, and molds. It primarily exerts its antibacterial effect by disrupting the cell membrane structure of microorganisms and interfering with their metabolic processes. For example, 1,2-hexanediol effectively inhibits the reproduction of common bacteria that cause cosmetic spoilage, such as Staphylococcus aureus and Escherichia coli, as well as yeasts and molds, thus extending the shelf life of cosmetics.

Stability and Compatibility:

1,2-Hexanediol exhibits good stability in cosmetic formulations. It maintains stable preservative properties across a wide pH range (typically between pH 3 and 9), making it suitable for various types of cosmetics, such as acidic toners, neutral lotions, and alkaline shampoos. Furthermore, it exhibits good compatibility with other ingredients in cosmetics, coexisting harmoniously with various oils, emulsifiers, surfactants, and active ingredients without causing chemical reactions that could affect product quality.

Advantages in Cosmetics

Enhancing Product Texture:

Because 1,2-hexanediol is colorless and odorless, it does not impart any unpleasant smell or color to cosmetics. Its good solubility helps other ingredients mix and dissolve better in formulations, resulting in a more uniform and delicate texture. For example, in serums, it ensures the even dispersion of high-concentration active ingredients, enhancing the product's effectiveness.

Auxiliary Moisturizing Properties:

1,2-Hexanediol itself possesses certain moisturizing properties. Its two hydroxyl groups can form hydrogen bonds with water molecules, helping the skin retain moisture. In cosmetics, it can synergistically work with other key moisturizing ingredients (such as hyaluronic acid and glycerin) to enhance the product's moisturizing effect. In moisturizing lotions or creams, it can form a moisturizing film on the skin's surface, preventing moisture loss and making the skin more hydrated.