Ingredient review
PEG-40 Hydrogenated Lanolin
INCI: PEG-40 Hydrogenated Lanolin
A gentle emulsifier that helps blend oil and water, but may clog pores for some skin types.
In plain English
PEG-40 Hydrogenated Lanolin is a modified version of lanolin, a natural oil from sheep's wool. The modification makes it water-soluble and less greasy, so it can help mix oil and water in products like lotions and creams. It also softens skin, but because it's derived from lanolin, it can be comedogenic (pore-clogging) for 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-40 Hydrogenated 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-40 Hydrogenated 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 hydrogenated lanolin with polyethylene glycol (PEG). This process makes the lanolin water-soluble and reduces its natural stickiness, turning it into a versatile emulsifier and skin conditioner.
How it works
It acts as an emulsifier, meaning it helps oil and water blend together into a stable cream or lotion. It also forms a thin film on the skin that helps lock in moisture and leaves a soft, smooth feel.
Pros
Effective emulsifier
Helps create stable, smooth creams and lotions that feel pleasant on the skin.
Non-greasy conditioning
Provides skin-softening benefits without the heavy, sticky feel of raw lanolin.
Cons and cautions
Potential pore clogging
Rated as moderately comedogenic, meaning it may cause breakouts for acne-prone or oily skin.
Allergy risk
Derived from lanolin, which can trigger allergic reactions in people sensitive to wool-derived ingredients.
Best for
- People with dry or normal skin looking for a gentle emulsifier
- Those who tolerate lanolin-based ingredients well
Use caution if
- Individuals with known lanolin allergy or sensitivity
- Acne-prone or oily skin types concerned about clogged pores
Usage tips
Safety summary
Generally considered safe for most skin types at typical concentrations. The main concerns are potential pore clogging and allergic reactions in lanolin-sensitive individuals. The PEG component may carry trace impurities, but regulatory bodies deem it safe when manufactured properly.
Research notes
Studies show PEGylated lanolin derivatives are effective emulsifiers with low acute toxicity. The CIR panel concluded that PEG-modified lanolin ingredients are safe in cosmetics when formulated to minimize irritation. Limited research exists on long-term skin effects.
Common label clues
- Typical concentration
- 1% to 5%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions. The Cosmetic Ingredient Review (CIR) panel has reviewed PEGylated lanolin derivatives and found them safe at typical use concentrations.
- Common uses
- Moisturizers, Cleansers, Makeup removers, Hair conditioners
- Environmental note
- Lanolin is a byproduct of wool production, making it a renewable resource. However, PEG compounds are synthetic and may not be fully biodegradable.
Good to know
- PEG-40 Hydrogenated Lanolin is often used in makeup removers because it helps dissolve oil-based makeup without stripping the skin.
- The PEG modification reduces the natural allergenicity of lanolin, but it's not completely eliminated.
Common questions
What is PEG-40 Hydrogenated Lanolin in beauty products?
PEG-40 Hydrogenated Lanolin is a modified version of lanolin, a natural oil from sheep's wool. The modification makes it water-soluble and less greasy, so it can help mix oil and water in products like lotions and creams. It also softens skin, but because it's derived from lanolin, it can be comedogenic (pore-clogging) for some people.
What does PEG-40 Hydrogenated Lanolin do in a beauty product?
It acts as an emulsifier, meaning it helps oil and water blend together into a stable cream or lotion. It also forms a thin film on the skin that helps lock in moisture and leaves a soft, smooth feel.
Is PEG-40 Hydrogenated Lanolin safe for most people?
Generally considered safe for most skin types at typical concentrations. The main concerns are potential pore clogging and allergic reactions in lanolin-sensitive individuals. The PEG component may carry trace impurities, but regulatory bodies deem it safe when manufactured properly.
Who should be careful with PEG-40 Hydrogenated Lanolin?
Individuals with known lanolin allergy or sensitivity Acne-prone or oily skin types concerned about 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.