PEG-20 is a polyethylene glycol-based cosmetic ingredient identified by the INCI name PEG-20. It belongs to the polyethylene glycol family and is primarily used as a humectant and solvent in cosmetic and personal-care formulations.
The number “20” indicates an average value of approximately 20 ethylene oxide-derived molecular units. PEG-20 therefore represents an average molecular composition rather than a single molecular species containing exactly 20 units.
PEG-20 is useful in formulations requiring hydrophilic, water-compatible functionality, moisture-retention support and solvent properties. It can be considered for skincare, haircare and other personal-care applications depending on the selected grade and formulation requirements.
PEG-20 is a polyethylene glycol material characterized by an average molecular-unit value of approximately 20. Polyethylene glycol materials contain a distribution of molecular species around their stated average.
The primary cosmetic functions of PEG-20 include:
PEG-20 is hydrophilic and can support formulations where water compatibility and incorporation of suitable ingredients are important.
PEG-20 should not be confused with chemically different PEG derivatives such as PEG-20 Stearate, PEG-20 Methyl Glucose Sesquistearate, PEG-20 Glyceryl Triisostearate, PEG-20 Almond Glycerides, PEG-20 Hydrogenated Castor Oil or other PEG-20-modified ingredients.
| Property | Details |
|---|---|
| Product Name | PEG-20 |
| INCI Name | PEG-20 |
| Chemical Family | Polyethylene Glycols |
| Chemical Type | Polyethylene glycol |
| Average Molecular Units | Approximately 20 |
| Synonyms | Polyethylene Glycol (20), Polyoxyethylene (20) |
| Physical State | Grade-dependent; typically viscous liquid |
| Appearance | Typically clear to colorless or slightly colored; grade-dependent |
| Origin | Synthetic |
| Water Compatibility | Hydrophilic / water-compatible |
| Primary Functions | Humectant, Solvent |
| Molecular Weight | Average/distribution-dependent |
| Molecular Composition | Average polymeric composition |
| Commercial Grade | Grade-specific |
| CAS Number | Verify against exact commercial grade |
PEG-20 can support moisture retention in cosmetic formulations. Its hydrophilic structure provides affinity for water and makes it suitable for hydration-focused formulations.
PEG-20 can assist in dissolving selected cosmetic ingredients and incorporating them into suitable formulation systems.
Its hydrophilic character can assist with the incorporation of compatible ingredients into aqueous or polar formulations.
PEG-20 can contribute to moisture management in skincare and personal-care products where a polyethylene glycol-based ingredient is required.
The combination of humectant and solvent functionality can help formulators develop suitable creams, lotions, toners and other personal-care products.
PEG-20 can be evaluated where a hydrophilic polyethylene glycol ingredient is required to provide humectant and solvent functionality.
The “20” represents an average molecular-unit value. It does not mean that every molecule contains exactly 20 ethylene oxide units.
The molecular-weight profile should be controlled according to the selected commercial grade because PEG materials have a molecular distribution around their stated average.
PEG-20 is hydrophilic and suitable for many water-containing and polar formulation systems.
The appropriate use level should be established through formulation testing according to the intended application and compatibility requirements.
Compatibility should be evaluated with:
The finished formulation pH should be determined according to the complete formulation rather than assigning a universal pH requirement to PEG-20.
Depending on the commercial grade, quality evaluation may include:
PEG-12: Lower average molecular-unit value than PEG-20.
PEG-16: Lower average molecular-unit value than PEG-20.
PEG-20: Average value of approximately 20.
PEG-24: Higher average molecular-unit value than PEG-20.
PEG-20 Stearate: An esterified PEG ingredient and chemically different from PEG-20.
PEG-20 Hydrogenated Castor Oil: A hydrogenated castor-oil-derived PEG ingredient and chemically different from PEG-20.
PEG-20 Methyl Glucose Sesquistearate: A PEG-modified glucose/stearate ingredient and different from PEG-20.
These distinctions are important for ingredient selection, formulation development, specifications and regulatory documentation.
Swapnroop provides cosmetic ingredient solutions for manufacturers and formulators developing skincare, haircare and personal-care products.
PEG-20 can be considered for formulations requiring a polyethylene glycol material with humectant and solvent functionality. The appropriate commercial grade should be selected according to molecular characteristics, physical properties, quality requirements and intended application.
For bulk procurement and formulation development, the applicable COA, TDS and product specification should be reviewed for the exact PEG-20 grade.
PEG-20 is a polyethylene glycol cosmetic ingredient with an average value of approximately 20 ethylene oxide-derived molecular units.
The INCI name is PEG-20.
PEG-20 is primarily used as a humectant and solvent.
The number 20 represents the average value of ethylene oxide-derived molecular units in the polyethylene glycol material.
No. PEG-20 represents an average molecular composition, so the molecular-weight distribution depends on the commercial grade.
No. PEG-20 Stearate is an esterified PEG derivative and has a different chemical identity.
No. PEG-20 Hydrogenated Castor Oil is a hydrogenated castor-oil-derived PEG ingredient and is chemically different from PEG-20.
PEG-20 can be considered for skincare, haircare and personal-care formulations where humectant or solvent functionality is required.
| Parameter | Specification |
|---|---|
| Appearance | Colourless to light-yellow liquid or oily liquid |