Hydrogenated Laneth-5: 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: June 27, 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 Hydrogenated Laneth-5?

Hydrogenated Laneth-5 is a modified form of lanolin alcohols, the fatty substances naturally found in sheep wool. To create it, the raw lanolin alcohols are first purified then subjected to hydrogenation, a process that saturates the fatty chains so they resist oxidation and spoilage. Afterward they are ethoxylated, meaning about five units of ethylene oxide are attached to each molecule. This small amount of ethoxylation makes the ingredient partly water loving and partly oil loving, a balance that helps it blend smoothly into many formulas.

Lanolin itself has been prized for centuries as a protective skin salve. During the mid 20th century chemists began breaking lanolin down into its alcohol component to gain greater stability and less odor in cosmetic use. Further hydrogenation and controlled ethoxylation produced grades like Hydrogenated Laneth-5 that disperse more easily in modern emulsions and leave less greasiness than traditional lanolin.

Today you will most often spot Hydrogenated Laneth-5 in rich facial moisturizers, overnight masks, anti-aging creams, body lotions, creamy cleansers, conditioning hair masks and styling balms. Its ability to improve texture and keep water and oil mixed also makes it useful in eye products and sensitive skin formulas where a smooth, cushiony feel is needed.

Hydrogenated Laneth-5’s Cosmetic Benefits/Uses

This multitasking ingredient supports both the performance and feel of a wide range of products.

  • Bulking: Adds pleasant body to creams and lotions so they feel substantial and spread evenly without a runny or watery consistency.
  • Skin Conditioning: Forms a soft, flexible film that slows moisture loss, leaving skin feeling comfortable and supple while reducing the need for heavier occlusives.
  • Emulsifying: Helps keep oil and water phases mixed, improving stability, preventing separation and giving finished products a smooth uniform appearance throughout their shelf life.

Who Can Use Hydrogenated Laneth-5

Thanks to its balanced oil-and-water loving structure Hydrogenated Laneth-5 suits most normal, dry and mature skin types that appreciate extra softness and a richer feel. Oily or very acne-prone skin may find formulas high in lanolin derivatives too heavy which could contribute to clogged pores or a greasy finish so those users should check the overall product texture before committing.

Because the ingredient is obtained from lanolin courtesy of sheep wool it is not considered vegan friendly. Vegetarians who avoid animal-derived topical ingredients for ethical reasons may also choose to skip it while others who are comfortable with cruelty-free wool harvesting may feel at ease using it.

Current safety data does not flag any special risk for women who are pregnant or breastfeeding when Hydrogenated Laneth-5 is used in cosmetics at typical levels. This is not medical advice and expecting or nursing mothers should show the full ingredient list of any skincare product to their doctor for personalized guidance.

The ingredient is not known to cause photosensitivity so it will not make skin more reactive to sunlight. It is also fragrance-free and does not contain common irritants like essential oils or drying alcohols which broadens its compatibility with sensitive skin provided there is no specific lanolin allergy.

Potential Side Effects/Adverse Reactions

Reactions to topical Hydrogenated Laneth-5 differ from person to person. The points below outline potential side effects yet most people will not encounter them when the ingredient is used correctly in a finished product.

  • Contact allergy in individuals sensitive to lanolin or wool derivatives
  • Mild redness or itching on very reactive skin
  • Temporary clogged pores or breakouts on acne-prone areas if the overall formula is overly rich
  • Eye irritation if a product accidentally gets into the eyes

If any discomfort or persistent reaction develops stop using the product and seek medical advice if needed.

Comedogenic Rating

Rating: 2/5

Hydrogenated Laneth-5 contains saturated lanolin alcohols that can sit on the skin surface yet its partial ethoxylation makes it lighter and more water compatible than raw lanolin. This balance means it is only slightly likely to block pores for most users. Those with very oily or congestion-prone skin might still notice blemishes if the overall formula is heavy but the ingredient on its own is considered low to moderate in pore-clogging potential.

In short, it is usually fine for people who get occasional breakouts but may not be ideal as a main emollient in routines for chronic acne.

Formulation level matters; products using it at a low percentage alongside lighter oils or silicones are far less likely to cause issues than thick balms where it is a key structural agent.

Summary

Hydrogenated Laneth-5 acts as a bulking agent that thickens textures, a skin conditioner that leaves a soft flexible film, and an emulsifier that keeps oil and water smoothly blended. Its hydrogenated backbone resists oxidation while the five ethoxylate units give enough water affinity to spread easily and reduce greasiness.

The ingredient enjoys steady though not blockbuster popularity. Brands that want the plush feel of lanolin without its stickiness appreciate it, whereas vegan or minimalist lines often skip it in favor of plant or silicone options.

Overall safety data shows low irritation and toxicity risk, with the main caution being possible allergy in people sensitive to wool derivatives. As with any new cosmetic component it is wise to do a small patch test when first using a product that contains Hydrogenated Laneth-5 to confirm personal compatibility.

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