Ingredient review
Acetylated Hydrogenated Lanolin
INCI: ACETYLATED HYDROGENATED LANOLIN
A gentle, modified lanolin that softens skin but may clog pores for some people.
In plain English
Acetylated hydrogenated lanolin is a processed version of lanolin, the natural oil from sheep's wool. The modification makes it less sticky and more spreadable than raw lanolin, so it feels smoother on skin. It works by forming a light film that helps keep moisture in and protects the skin barrier. However, because it is oil-based, it can be comedogenic (pore-clogging) for those prone to breakouts.
Quick decision guide
Useful, but context matters
Acetylated 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 Acetylated 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 emollient made by chemically modifying lanolin (a waxy substance from sheep's wool) through hydrogenation and acetylation. This process reduces the natural odor and stickiness while improving its ability to soften and condition skin.
How it works
It sits on the skin's surface, filling in gaps between skin cells to create a smooth, soft feel. It also forms a thin, breathable barrier that slows water loss, helping to keep skin hydrated. Unlike pure lanolin, it is less greasy and absorbs more quickly.
Pros
Effective moisturizer
Helps lock in hydration by forming a protective film, making it great for dry or chapped skin.
Improved texture
Feels lighter and less sticky than raw lanolin, so it spreads easily and doesn't leave a heavy residue.
Cons and cautions
Pore-clogging potential
Rated moderately comedogenic, meaning it can cause breakouts or clogged pores for those with acne-prone skin.
Not vegan-friendly
Derived from sheep's wool, so it is not suitable for those following a vegan lifestyle.
Best for
- People with dry or very dry skin needing extra moisture retention
- Those looking for a rich, non-greasy emollient in creams or balms
Use caution if
- Individuals with oily or acne-prone skin, due to moderate comedogenic risk
- Vegans or those avoiding animal-derived ingredients
Usage tips
Safety summary
Generally recognized as safe for topical use in cosmetics. The main concern is its moderate comedogenic potential and rare allergic reactions in lanolin-sensitive individuals. No known toxicity or carcinogenicity at typical use levels.
Research notes
Studies confirm its effectiveness as an emollient and skin barrier enhancer. Comedogenicity data is based on historical rabbit ear tests and human patch tests, which rate it as moderately pore-clogging. Allergic reactions are uncommon but documented.
Common label clues
- Typical concentration
- 1% to 10% in leave-on products
- Regulatory status
- Approved as a safe cosmetic ingredient by the U.S. FDA and the European Commission, with no concentration restrictions in leave-on products.
- Common uses
- Moisturizers, Lip products, Eye creams, Hair conditioners
- Environmental note
- Lanolin is a byproduct of wool production, so its use can be considered a form of upcycling. However, it is animal-derived and not suitable for those seeking plant-based alternatives.
Good to know
- Acetylated hydrogenated lanolin is often used in lip balms because it stays put and feels smooth.
- It is more stable than natural lanolin, meaning it is less likely to go rancid in your products.
Common questions
What is Acetylated Hydrogenated Lanolin in beauty products?
Acetylated hydrogenated lanolin is a processed version of lanolin, the natural oil from sheep's wool. The modification makes it less sticky and more spreadable than raw lanolin, so it feels smoother on skin. It works by forming a light film that helps keep moisture in and protects the skin barrier. However, because it is oil-based, it can be comedogenic (pore-clogging) for those prone to breakouts.
What does Acetylated Hydrogenated Lanolin do in a beauty product?
It sits on the skin's surface, filling in gaps between skin cells to create a smooth, soft feel. It also forms a thin, breathable barrier that slows water loss, helping to keep skin hydrated. Unlike pure lanolin, it is less greasy and absorbs more quickly.
Is Acetylated Hydrogenated Lanolin safe for most people?
Generally recognized as safe for topical use in cosmetics. The main concern is its moderate comedogenic potential and rare allergic reactions in lanolin-sensitive individuals. No known toxicity or carcinogenicity at typical use levels.
Who should be careful with Acetylated Hydrogenated Lanolin?
Individuals with oily or acne-prone skin, due to moderate comedogenic risk 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.