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.
Chlorphenesin is a synthetic preservative used in skincare products to prevent bacterial and fungal growth, extending shelf life. It's a broad-spectrum antimicrobial agent that helps keep products safe from contamination during storage and use.
Benefits
Prevents microbial contamination in skincare formulations
Extends product shelf life
Allows formulas to remain stable without refrigeration
Potential concerns
May cause irritation to sensitive eyes and eye area when present in eye products
Degrades under UV exposure, potentially creating more harmful breakdown products
Limited long-term safety data in peer-reviewed literature
Science: Research shows chlorphenesin can be toxic to eye tissue cells at approved concentrations, particularly affecting meibomian glands. When exposed to sunlight, it breaks down into compounds like 4-chlorophenol that may be more ecotoxic than the original ingredient, though systemic absorption in skincare is typically minimal.
Disodium EDTA is a chelating agent that binds to metals and minerals in skincare formulations. It helps stabilize products, prevent discoloration, and improve texture by controlling how other ingredients behave in the formula.
Benefits
Stabilizes skincare formulations and extends shelf life
Prevents oxidation and discoloration of products
Improves product texture and consistency
Potential concerns
May increase skin penetration of other ingredients in the formula
Not absorbed through skin under normal use, but inhalation from sprays should be minimized
Can cause irritation at high concentrations, though typical use levels (under 2%) are considered safe
Science: The Cosmetic Ingredient Review Expert Panel confirmed in 2023 that disodium EDTA is safe at typical cosmetic use concentrations (under 2%). Research shows it is not absorbed through intact skin, though it may affect how other ingredients penetrate skin due to its mineral-binding properties. No carcinogenic effects have been identified.
Calendula officinalis flower extract is derived from marigold flowers and has been used traditionally to support skin healing and comfort. In skincare products, it's included for its potential anti-inflammatory and soothing properties.
Benefits
May help reduce inflammation and redness
Supports skin healing and recovery processes
Provides soothing comfort to irritated skin
Potential concerns
Potential for allergic contact dermatitis in sensitive individuals or those allergic to plants in the Asteraceae family (ragweed, chamomile, etc.)
Limited evidence for effectiveness in chronic wound conditions and some skin concerns
Science: Animal studies show moderate evidence that calendula extract accelerates the inflammation phase of wound healing and increases granulation tissue production. Clinical evidence is mixed—some trials on acute wounds and venous ulcers show benefit, while studies on diabetic ulcers and burns showed no improvement compared to standard treatments. Larger, well-designed clinical trials are needed to establish efficacy for specific skincare uses.
