Ingredient review
PEG-75 Lanolin
INCI: PEG-75 Lanolin
A versatile, water-friendly emollient derived from lanolin, but may be comedogenic for acne-prone skin.
In plain English
PEG-75 Lanolin is a modified version of lanolin (a natural oil from sheep's wool) that has been treated with polyethylene glycol (PEG) to make it dissolve in water. This means it can moisturize and soften skin without leaving a greasy feel, and it helps mix oil and water in products like creams and cleansers. However, because it's still related to lanolin, it may clog pores in some people.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Main practical flags: irritation is low; clogging risk is moderate.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- moderate
Quick decision guide
Useful, but context matters
PEG-75 Lanolin can be useful, but watch for possible clogging concerns.
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-75 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
moderateMay be fine for many users but deserves caution if you are breakout-prone.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A semi-synthetic ingredient created by reacting lanolin with ethylene oxide (PEG), producing a water-soluble emollient and emulsifier. It retains the moisturizing properties of lanolin but is easier to rinse off and less likely to feel heavy on the skin.
How it works
PEG-75 Lanolin works by coating the skin with a thin, water-attracting film that locks in moisture. As an emulsifier, it helps blend water and oil phases in a formula, creating stable creams and lotions. Its surfactant properties also allow it to gently cleanse without stripping natural oils.
Pros
Water-soluble emollient
Unlike plain lanolin, PEG-75 Lanolin dissolves in water, making it easy to rinse off and ideal for cleansers and lightweight moisturizers.
Versatile emulsifier
It helps blend oil and water in formulas, resulting in stable, smooth creams and lotions that feel pleasant on the skin.
Cons and cautions
Potential comedogenicity
For acne-prone or oily skin, this ingredient may clog pores and contribute to breakouts, so it's best avoided in leave-on products for those skin types.
Manufacturing impurity risk
As a PEG derivative, it can contain trace amounts of 1,4-dioxane, a potential carcinogen, though reputable manufacturers purify to safe levels.
Best for
- People with dry or normal skin looking for a non-greasy moisturizer
- Those who want a gentle emulsifier in their skincare routine
Use caution if
- Individuals with known lanolin allergy or sensitivity
- Acne-prone or oily skin types who may experience clogged pores
Usage tips
Safety summary
PEG-75 Lanolin is generally considered safe for most people when used as directed. The main concerns are potential comedogenicity for acne-prone skin and trace impurities from manufacturing. Regulatory bodies allow its use with purity standards.
Research notes
Studies confirm PEG-75 Lanolin is an effective emollient and emulsifier with low acute toxicity. Research on comedogenicity is mixed, but it is often flagged as moderate risk. The Cosmetic Ingredient Review (CIR) panel has evaluated PEG lanolin derivatives as safe under current use conditions.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics by the FDA and EU CosIng database. Manufacturers are expected to limit 1,4-dioxane to safe levels (typically under 10 ppm).
- Common uses
- Moisturizers, Cleansers, Hair conditioners, Makeup removers, Soaps
- Environmental note
- Lanolin is a renewable byproduct of wool production, but the PEG process involves synthetic chemistry. Biodegradability is moderate.
Good to know
- PEG-75 Lanolin is often used in baby products because it is milder than plain lanolin.
- The '75' refers to the average number of ethylene oxide units added, which determines its water solubility.
Common questions
What is PEG-75 Lanolin in beauty products?
PEG-75 Lanolin is a modified version of lanolin (a natural oil from sheep's wool) that has been treated with polyethylene glycol (PEG) to make it dissolve in water. This means it can moisturize and soften skin without leaving a greasy feel, and it helps mix oil and water in products like creams and cleansers. However, because it's still related to lanolin, it may clog pores in some people.
What does PEG-75 Lanolin do in a beauty product?
PEG-75 Lanolin works by coating the skin with a thin, water-attracting film that locks in moisture. As an emulsifier, it helps blend water and oil phases in a formula, creating stable creams and lotions. Its surfactant properties also allow it to gently cleanse without stripping natural oils.
Is PEG-75 Lanolin safe for most people?
PEG-75 Lanolin is generally considered safe for most people when used as directed. The main concerns are potential comedogenicity for acne-prone skin and trace impurities from manufacturing. Regulatory bodies allow its use with purity standards.
Who should be careful with PEG-75 Lanolin?
Individuals with known lanolin allergy or sensitivity Acne-prone or oily skin types who may experience clogged pores
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.