Peg-10 Hydrogenated Lanolin: 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-10 Hydrogenated Lanolin?

Peg-10 Hydrogenated Lanolin is a modified form of lanolin, the waxy substance naturally produced by sheep to protect their wool. To create this cosmetic ingredient, raw lanolin is first hydrogenated, a process that adds hydrogen to stabilize the oil and give it a smoother feel. It is then reacted with roughly ten units of ethylene oxide, which adds water-loving parts to the molecule. The result is a creamy, semi-solid material that can mix with both oils and water.

Lanolin itself has been used in skin care since the late 1800s for its rich, skin-softening qualities. Chemists began tweaking the original material to make it more versatile and less greasy, and Peg-10 Hydrogenated Lanolin is one of those modern tweaks. Because it blends easily into different formulas and leaves a lighter finish than plain lanolin, it has become popular in many everyday products.

You will often find Peg-10 Hydrogenated Lanolin in moisturizers, night creams, hand lotions, lip balms, cleansing balms, hair masks, tinted moisturizers and various anti-aging formulas. Its ability to keep textures smooth and stable makes it useful in both water-based and oil-based products.

Peg-10 Hydrogenated Lanolin’s Cosmetic Benefits/Uses

This ingredient offers two main functions in personal care products

  • Emollient – forms a soft, smoothing film over skin or hair that traps water, reduces roughness and leaves the surface feeling supple and comfortable
  • Emulsifying – helps oil and water mix evenly, improving product stability so creams stay uniform and pleasant to apply

Who Can Use Peg-10 Hydrogenated Lanolin

Thanks to its moisturizing and smoothing qualities Peg-10 Hydrogenated Lanolin suits most dry, normal and combination skin types well. Its rich texture may feel too occlusive for very oily or acne-prone skin, so those users might prefer lighter alternatives or use it only on dry patches.

The ingredient comes from sheep wool so it is not considered vegan. Vegetarians who are comfortable with animal-derived by-products may still choose to use it.

No specific restrictions exist for women who are pregnant or breastfeeding. Current data shows no evidence of harm from topical use, but this is not medical advice and anyone expecting or nursing should confirm product choices with a qualified healthcare professional.

Peg-10 Hydrogenated Lanolin does not cause photosensitivity and can be worn during the day without increasing sun-related risks. It is also generally compatible with other common skincare ingredients.

Potential Side Effects/Adverse Reactions

Reactions to topical Peg-10 Hydrogenated Lanolin differ from person to person. The points below list possible side effects only and most people will not experience them when the ingredient is used correctly in a well-formulated product.

  • Allergic contact dermatitis characterized by redness itching and small bumps
  • Mild stinging or irritation on very sensitive or compromised skin
  • Clogged pores or acne flare-ups in individuals prone to breakouts
  • Folliculitis (inflamed hair follicles) in rare cases where heavy occlusion traps bacteria
  • Eye irritation if the product accidentally gets into the eyes

If any discomfort or unexpected reaction occurs stop use immediately and seek advice from a dermatologist or medical professional.

Comedogenic Rating

Rating: 2/5

Peg-10 Hydrogenated Lanolin is lighter and more water friendly than raw lanolin, which helps it sit on skin without sealing pores as tightly. Still, it is a waxy material and can add a bit of weight to a formula, so it carries a low to moderate chance of clogging pores. This places it at a 2 on the common 0-5 comedogenic scale.

People who are very prone to acne or who already struggle with congested skin may prefer to limit use or apply it only on dry spots. Most other skin types should tolerate it without issue.

Factors like how much of the ingredient is used, what other ingredients are in the product and individual skin type all influence the real-world risk of breakouts.

Summary

Peg-10 Hydrogenated Lanolin acts mainly as an emollient and an emulsifier. It smooths rough areas by creating a soft film that traps water then keeps oil and water mixed so creams stay stable and pleasant to spread. These dual roles make it a handy all-rounder in moisturizers, balms, makeup and hair care.

Although it is not the trendiest name on an ingredient list, its reliable performance keeps it in many everyday formulas. Brands appreciate the way it softens skin while helping products hold together, and users often like the cushy feel it adds.

Current research and long decades of use show it to be safe for topical application with only a small risk of irritation for most people. As with any new product, it is smart to do a small patch test first to be sure your skin agrees with it.

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