Glycol

Glycols are a class of organic compounds that function primarily as solvents and humectants in cosmetic formulations. They help dissolve other ingredients and can attract and hold water, contributing to product texture and skin hydration. The specific type of glycol used can influence its properties and potential effects.

BenefitMinimal 0.8 / 4

Hydration i0.8 / 4

Whether the ingredient helps increase the skin’s water content — humectants that attract water, ingredients that reduce water loss, or ones that make skin feel less dry.

RiskLow 1.2 / 4

Irritation i1.2 / 4

Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.

Sensitization i0.9 / 4

Risk of allergic contact dermatitis or immune-based reactions. Fragrance allergens, preservatives, botanicals, and some dyes may score here.

Rated by SpottyLabs' ingredient methodology, independent of brands.

What it helps with

• Enhances ingredient solubility
• Improves product texture
• Provides mild hydration

Things to watch

• Potential for skin irritation
• Can cause allergic reactions

Frequently asked questions

What is the difference between different types of glycols?

There are many types of glycols, such as propylene glycol, butylene glycol, and hexylene glycol. While they share similar functions as solvents and humectants, their molecular size and structure can influence their skin penetration, potential for irritation, and overall feel in a product.

Are glycols safe for sensitive skin?

Some glycols, particularly in higher concentrations, can be irritating for sensitive skin. Propylene glycol, for example, has a higher potential for irritation compared to butylene glycol. Patch testing is recommended if you have sensitive skin.