Ingredient review
PEG-85 Lanolin
INCI: PEG-85 Lanolin
A water-friendly version of lanolin that softens skin and helps blend oils and water, but may not suit those with wool allergies or sensitive skin.
In plain English
PEG-85 Lanolin is lanolin that has been treated with ethylene oxide to make it dissolve in water. Lanolin is a waxy substance from sheep's wool that moisturizes and protects skin. The PEG (polyethylene glycol) part makes it mix easily with water, so it can be used in rinse-off products like cleansers and shampoos without leaving a greasy feel. It helps other ingredients spread evenly and leaves skin feeling soft.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
PEG-85 Lanolin is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging PEG-85 Lanolin.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A semi-synthetic ingredient made by reacting natural lanolin with ethylene oxide. The number 85 refers to the average number of ethylene oxide units added, which determines its water solubility and mildness.
How it works
PEG-85 Lanolin acts as an emulsifier, helping oil and water ingredients blend together in a formula. It also deposits a thin, moisturizing film on the skin or hair, reducing water loss and improving texture. In cleansers, it helps remove dirt and makeup without stripping natural oils.
Pros
Water-soluble moisturizer
Unlike plain lanolin, PEG-85 Lanolin rinses off easily and won't leave a heavy, greasy residue, making it ideal for daily cleansers and shampoos.
Gentle emulsifier
It helps mix oils and water smoothly, improving product texture and stability without harsh surfactants, which is kinder to sensitive skin.
Cons and cautions
Potential allergen for some
Because it is derived from lanolin, people with wool allergies or sensitive skin may experience irritation or contact dermatitis.
Ethoxylation concerns
The manufacturing process can create trace amounts of 1,4-dioxane, a potential contaminant. Reputable brands purify their ingredients to keep levels very low.
Best for
- People with dry or normal skin looking for gentle cleansing
- Those who want a non-greasy moisturizing ingredient in wash-off products
Use caution if
- Individuals with known wool or lanolin allergies
- Strict vegans or those avoiding animal-derived ingredients
Usage tips
Safety summary
PEG-85 Lanolin is considered safe for use in cosmetics at typical concentrations. The main safety considerations are potential allergic reactions in individuals sensitive to lanolin and the presence of trace impurities from ethoxylation. Reputable manufacturers purify the ingredient to meet safety standards.
Research notes
Studies on PEG lanolin derivatives indicate low skin irritation and sensitization potential. The CIR panel has concluded that PEGylated lanolin ingredients are safe when formulated to minimize 1,4-dioxane. No significant new research has raised concerns.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. The Cosmetic Ingredient Review (CIR) panel has reviewed PEG lanolin derivatives and found them safe as used, with the caveat that impurities like 1,4-dioxane should be minimized.
- Common uses
- Cleansers, Shampoos, Conditioners, Body washes, Makeup removers
- Environmental note
- Lanolin is a byproduct of wool production, making it a renewable resource. However, the ethoxylation process uses ethylene oxide, which is derived from fossil fuels. Biodegradability is moderate.
Good to know
- PEG-85 Lanolin is often listed simply as 'PEG-85 Lanolin' on labels; it is not the same as plain lanolin.
- The '85' indicates a high degree of ethoxylation, which makes it very water-soluble and mild.
Common questions
What is PEG-85 Lanolin in beauty products?
PEG-85 Lanolin is lanolin that has been treated with ethylene oxide to make it dissolve in water. Lanolin is a waxy substance from sheep's wool that moisturizes and protects skin. The PEG (polyethylene glycol) part makes it mix easily with water, so it can be used in rinse-off products like cleansers and shampoos without leaving a greasy feel. It helps other ingredients spread evenly and leaves skin feeling soft.
What does PEG-85 Lanolin do in a beauty product?
PEG-85 Lanolin acts as an emulsifier, helping oil and water ingredients blend together in a formula. It also deposits a thin, moisturizing film on the skin or hair, reducing water loss and improving texture. In cleansers, it helps remove dirt and makeup without stripping natural oils.
Is PEG-85 Lanolin safe for most people?
PEG-85 Lanolin is considered safe for use in cosmetics at typical concentrations. The main safety considerations are potential allergic reactions in individuals sensitive to lanolin and the presence of trace impurities from ethoxylation. Reputable manufacturers purify the ingredient to meet safety standards.
Who should be careful with PEG-85 Lanolin?
Individuals with known wool or lanolin allergies Strict vegans or those avoiding animal-derived ingredients
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.