Product Brief: Humectant G-18Humectant G-18 is a cosmetic-grade hydrating agent with outstanding performance, appearing as a colorless viscous liquid at 25°C. It meets strict specs: pH 5.0-7.0 (1% aqueous solution), hydroxyl value 185-200 mgKOH/g, and moisture content ≤1%.
It delivers long-lasting moisture retention, works as a lubricant and foam improver, and blends well with water/ethanol and most surfactants. Ideal for water-based skincare (lotions/creams), haircare (shampoos/conditioners), and toiletries, it's safe for sensitive skin and supports efficient bulk formulation.
Product Advantage
Excellent Compatibility: Humectant G-18 is soluble in water and ethanol, insoluble in hydrocarbons. It's stable within the pH range of general cosmetics and compatible with cationic, anionic, and non - ionic surfactants.
Outstanding Moisturizing Capacity: With a hydroxyl value of 185 - 200 mgKOH/g, it can effectively lock moisture, providing long - lasting hydration for relevant products.
High Purity: Its moisture content is ≤1%, ensuring high purity and reducing the risk of microbial contamination, which is favorable for product stability and shelf - life.
Versatile Applications: It serves as a moisturizer, lubricant, and foam modifier in cosmetics and toiletries, and also as an intermediate in betaine synthesis.
Technical Specifications
Parameter | Specification of Humectant G-18 |
Appearance (25°C) | Colorless to pale yellow viscous liquid |
pH Value (1% Aqueous Solution) | 5.0 - 7.0 |
Hydroxyl Value (mgKOH/g) | 185 - 200 |
Moisture Content | ≤1% |
Product Uses
Cosmetics and Toiletries: Used as a moisturizer in skincare products like creams and lotions to keep the skin hydrated. Also functions as a lubricant and foam modifier in various cosmetics and toiletries.
Chemical Intermediate: Acts as an intermediate in the synthesis of betaine, contributing to the production of related chemical compounds.
Product Operate Guide
For water-based cosmetics (lotions/creams) or haircare (shampoos): Add 1-5% Humectant G-18 to the formula during production. Blend with water/ethanol or surfactants at 25-40°C, stirring gently until fully dissolved (avoids clumping).
For chemical synthesis (fatty acid esters): Follow reaction-specific dosages, ensuring mixing with compatible raw materials. Store leftover product in a dry, ventilated place to maintain its ≤1% moisture content.
FAQ
1. Q: Can Humectant G-18 dissolve in oil-based cosmetic formulas?
A: No, it cannot. Humectant G-18 is soluble in water and ethanol but insoluble in oils. It is specifically designed for water-based formulas like lotions, creams, and shampoos to ensure stable integration.
2. Q: Is Humectant G-18 safe to use in products for sensitive skin?
A: Yes, it is. With a pH of 5.0-7.0 (1% aqueous solution) and non-irritating properties, it matches the skin's natural pH. It also works well with gentle surfactants, making it suitable for sensitive skin products.
3. Q: Will storing Humectant G-18 in a humid environment affect its performance?
A: Yes, it will. Humid conditions may increase its moisture content (exceeding the ≤1% standard), reducing its moisturizing efficiency. Always store it in a dry, ventilated place to maintain quality.
4. Q: Can I adjust the 1-5% dosage of Humectant G-18 in my formula?
A: You can, but within a reasonable range. The 1-5% range balances moisturization and formula stability. For lighter products (e.g., toners), use 1-2%; for richer creams, 3-5%. Test first to avoid texture issues.
5. Q: Does Humectant G-18 conflict with common cosmetic preservatives?
A: No, it doesn't. It is compatible with most cationic, anionic, and non-ionic surfactants, as well as common preservatives (e.g., phenoxyethanol). This ensures no conflicts in multi-ingredient formulations.
