Butylene glycol is a humectant—a type of ingredient that draws water into the skin and helps it stay hydrated. It's a small, lightweight molecule commonly used in moisturizers to improve hydration without leaving a heavy feel on the skin.
Benefits
Increases skin hydration and moisture retention
Lightweight and absorbs quickly
Helps other active ingredients penetrate the skin more effectively
Science: Research demonstrates that butylene glycol, when combined with other humectants (like glycerin and hyaluronic acid) and occlusive ingredients in moisturizers, significantly improves skin hydration in both healthy skin and compromised skin conditions such as atopic dermatitis. It is recognized as a safe, effective humectant in dermatological formulations.
Phenoxyethanol is a preservative that prevents bacteria, yeast, and mold from growing in skincare products, helping them stay fresh and safe to use. It has been used safely in cosmetics for decades and is effective at very low concentrations.
Benefits
Prevents microbial contamination and product spoilage
Broad-spectrum antimicrobial activity against bacteria and yeast
Minimal impact on beneficial skin bacteria when used at approved levels
Potential concerns
Rare allergic contact dermatitis in sensitive individuals
May cause irritation if used in products at concentrations above 1%
Science: The European Scientific Committee on Consumer Safety considers phenoxyethanol safe for all consumers, including children, at concentrations up to 1%. Adverse effects observed in animal studies required exposure levels approximately 200 times higher than those in cosmetic products, and it is classified as one of the most well-tolerated preservatives in cosmetics.
Trisodium EDTA is a chelating agent that binds to metals and minerals in cosmetic formulas, helping stabilize products and prevent them from breaking down. It's used in small amounts (typically under 2%) to maintain product consistency and shelf life.
Benefits
Stabilizes cosmetic formulations and extends shelf life
Prevents discoloration and degradation caused by trace metals
Helps preserve product efficacy over time
Potential concerns
May increase skin penetration of other ingredients by binding to calcium in skin
Should be avoided in inhalable products (sprays, powders) due to potential respiratory concerns
Not intended for ingestion or use in products applied to lips/mouth area
Science: The Cosmetic Ingredient Review Expert Panel confirmed safety in 2023 based on current practices and concentrations. While EDTA is not absorbed through intact skin, it can alter how other chemicals penetrate the skin by chelating calcium, so formulators must carefully consider ingredient combinations.
Disodium cocoamphodiacetate is a mild, plant-derived cleansing agent (surfactant) made from coconut oil. It removes dirt and oil from skin while being gentler than many traditional detergents, making it a common choice in facial cleansers and body washes.
Benefits
Effectively cleanses skin without harsh stripping
Well-tolerated by sensitive skin types
Mild enough for daily use in facial products
Plant-derived ingredient
Science: A 2010 clinical study of 105 patients found disodium cocoamphodiacetate to be one of the most well-tolerated surfactants tested, with no allergic reactions or irritation observed. It is recognized in dermatological literature as a mild amphoteric surfactant suitable for sensitive skin formulations.
