Peg-75 Lanolin Oil: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: July 1, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Peg-75 Lanolin Oil?

Peg-75 Lanolin Oil is a modified form of lanolin, the natural waxy substance extracted from sheep wool after shearing. Through a process called ethoxylation it is combined with roughly 75 units of ethylene oxide per molecule, creating an oil that blends easily with both water and oil. This change turns the original sticky wax into a lighter ingredient that dissolves in water, making it more versatile in modern formulas.

Lanolin has been prized for centuries for its ability to soften and protect skin. Scientists began altering it in the mid-1900s to overcome its heavy texture and occasional stickiness. Peg-75 Lanolin Oil was one of the results, offering the skin-friendly qualities of lanolin with improved spreadability and rinse-off.

The process starts with purified lanolin that is heated and reacted with ethylene oxide under controlled conditions. The finished material is filtered and refined into a clear to pale yellow liquid that suppliers ship to cosmetic labs.

You will commonly spot Peg-75 Lanolin Oil in facial cleansers, creamy body washes, makeup removers, moisturizers, hair conditioners and baby care lotions where a gentle cleansing or blending aid is needed.

Peg-75 Lanolin Oil’s Cosmetic Benefits/Uses

In beauty products Peg-75 Lanolin Oil mainly serves two practical roles that improve how a formula looks, feels and performs.

  • Cleansing: Its partly water-soluble structure grabs hold of dirt, oil and leftover makeup then allows them to rinse away easily. This gives cleansers a mild yet effective wash-off action that feels soft rather than stripping.
  • Emulsifying: It helps water and oil mix into a smooth, stable cream or lotion. This keeps products from separating on the shelf and creates a silky texture that spreads evenly on skin or hair.

Who Can Use Peg-75 Lanolin Oil

Peg-75 Lanolin Oil is gentle enough for most skin types. Dry, normal and combination skin often enjoy its light moisture and soft feel. Oily or acne-prone skin may still use it, but because lanolin can on rare occasions clog pores in very reactive users, those with frequent breakouts might prefer lighter alternatives.

This ingredient comes from sheep wool so it is not suitable for vegans. Vegetarians who are comfortable with wool-derived items may choose to use it since no harm comes to the sheep during shearing.

Pregnant or breastfeeding women are not known to face special risks from topical Peg-75 Lanolin Oil in normal cosmetic amounts. Still, this is not medical advice and anyone who is expecting or nursing should run any skincare products past a doctor to be on the safe side.

Peg-75 Lanolin Oil does not make skin more sensitive to the sun so no extra sun precautions are required beyond a daily SPF. It is also considered safe for use on the scalp and hair and is mild enough for many baby care formulas.

Potential Side Effects/Adverse Reactions

Side effects from topical Peg-75 Lanolin Oil vary from person to person. The points below list potential issues, yet they are uncommon for most users when the ingredient is used correctly by the product maker.

  • Mild skin irritation such as redness or itching
  • Allergic contact dermatitis in individuals sensitive to wool alcohols
  • Clogged pores or small breakouts in people who are highly acne-prone
  • Rare stinging around the eyes if the product is not fully rinsed

If any of these reactions occur stop using the product and seek guidance from a health professional.

Comedogenic Rating

Rating: 2/5

Peg-75 Lanolin Oil starts with naturally heavy lanolin but its ethoxylation makes the molecules more water friendly which cuts down their tendency to sit in pores. Even so traces of the original fatty structure remain so a small risk of congestion is still there. In most rinse off or low concentration leave on products the ingredient stays light enough for everyday use but very blemish prone users might notice an occasional blocked pore.

In short, it is usually fine for acne prone skin yet not the best pick for those who know they react badly to any lanolin derivative.

The final impact will also depend on the full formula, how often the product is used and how thoroughly it is removed from the skin.

Summary

Peg-75 Lanolin Oil acts as a gentle cleanser and a reliable emulsifier. Its partly water soluble structure grabs oils and dirt for easy rinse off while also binding water with oils to keep creams stable smooth and spreadable.

The ingredient is a quiet workhorse rather than a headline star so it pops up more in functional roles than in marketing claims. You will mainly notice it in soft creamy cleansers conditioners and some moisturizers where it adds slip without heaviness.

Regulatory panels consider it safe at the levels used in cosmetics and side effects are rare. As with any new skin care step a small patch test is a smart way to make sure your own skin agrees with it.

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