Ingredient review
PEG-15 Hydrogenated Lanolin
INCI: PEG-15 Hydrogenated Lanolin
A gentle, modified lanolin that moisturizes and helps blend water and oil, but may be too heavy for acne-prone skin.
In plain English
PEG-15 Hydrogenated Lanolin is a version of lanolin (a waxy substance from sheep's wool) that has been chemically modified to be less sticky and more water-friendly. It helps soften skin and allows oil and water to mix smoothly in creams and lotions. Because it's still derived from lanolin, it can be heavy for oily or acne-prone skin, and people with wool allergies should be cautious.
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-15 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-15 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 made by reacting hydrogenated lanolin with polyethylene glycol (PEG). This process makes the natural lanolin more water-soluble and less greasy, while retaining its moisturizing properties.
How it works
It acts as an emollient by filling in gaps between skin cells to soften and smooth the skin. As an emulsifier, it helps water and oil blend together in a product so they don't separate. The PEG chains also give it mild cleansing properties, allowing it to gently remove dirt and makeup.
Pros
Effective moisturizer
Helps soften and smooth dry skin by filling in gaps between skin cells, making it feel more comfortable and less flaky.
Versatile emulsifier
Allows water and oil to mix in a single product, which means you get a stable, creamy texture that applies evenly.
Cons and cautions
May clog pores
Because it is derived from lanolin, it has a moderate comedogenic rating, meaning it can cause breakouts in acne-prone or oily skin.
Allergen potential
People with wool allergies may react to residual proteins in lanolin derivatives, leading to redness or irritation.
Best for
- People with dry or normal skin looking for a gentle moisturizer
- Those who tolerate lanolin but want a less greasy option
Use caution if
- Individuals with known wool allergies or sensitivity to lanolin
- Acne-prone or oily skin types, as it may clog pores
Usage tips
Safety summary
Generally considered safe for most people when used as directed. The main concerns are potential comedogenicity and allergy in sensitive individuals. Manufacturing purity of PEG is important to avoid contaminants like ethylene oxide.
Research notes
Lanolin and its derivatives have a long history of safe use in cosmetics. Studies show PEG-modified lanolin is less irritating and more water-soluble than natural lanolin. However, there is limited modern research specifically on PEG-15 Hydrogenated Lanolin.
Common label clues
- Typical concentration
- Typically 1–10% in leave-on products; up to 20% in rinse-off products
- Regulatory status
- Approved for use in cosmetics in the US (FDA), EU, and many other regions. The PEG component is generally recognized as safe when manufactured to purity standards.
- Common uses
- Moisturizers, Cleansers, Hair conditioners, Makeup removers
- Environmental note
- Lanolin is a byproduct of wool production, making it a renewable resource. However, the PEG modification involves synthetic chemistry, and the ingredient may not be fully biodegradable.
Good to know
- PEG-15 Hydrogenated Lanolin is often used in 'water-in-oil' emulsions, which are especially good for very dry skin.
- The 'PEG-15' refers to the number of ethylene oxide units added, which determines how water-soluble the ingredient becomes.
Common questions
What is PEG-15 Hydrogenated Lanolin in beauty products?
PEG-15 Hydrogenated Lanolin is a version of lanolin (a waxy substance from sheep's wool) that has been chemically modified to be less sticky and more water-friendly. It helps soften skin and allows oil and water to mix smoothly in creams and lotions. Because it's still derived from lanolin, it can be heavy for oily or acne-prone skin, and people with wool allergies should be cautious.
What does PEG-15 Hydrogenated Lanolin do in a beauty product?
It acts as an emollient by filling in gaps between skin cells to soften and smooth the skin. As an emulsifier, it helps water and oil blend together in a product so they don't separate. The PEG chains also give it mild cleansing properties, allowing it to gently remove dirt and makeup.
Is PEG-15 Hydrogenated Lanolin safe for most people?
Generally considered safe for most people when used as directed. The main concerns are potential comedogenicity and allergy in sensitive individuals. Manufacturing purity of PEG is important to avoid contaminants like ethylene oxide.
Who should be careful with PEG-15 Hydrogenated Lanolin?
Individuals with known wool allergies or sensitivity to lanolin Acne-prone or oily skin types, as it may clog 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.