Lena Savoie
Lanolin and lanolin alcohol are two common forms of lanolin, a long-chain waxy ester that contains cholesterol. Lanolin is an ointment-like material isolated from wool sheared from sheep. Lanolin alcohol is a mixture of organic alcohols obtained from the hydrolysis of lanolin. Lanolin is used commercially in industrial products, whereas lanolin alcohol is commonly used in skincare products. Lanolin alcohol is also used in medical applications, such as dermal patches and topical products, to deliver medicinal drugs to body tissues.
| Characteristics | Values |
|---|---|
| Composition | Lanolin is a long-chain waxy ester that contains cholesterol. Lanolin alcohol is a mixture of organic alcohols obtained from the hydrolysis of lanolin. |
| Texture | Lanolin has a waxy texture. Lanolin alcohol has a waxy texture with a pale colour. |
| Scent | Lanolin has a mild scent. Lanolin alcohol has a mild scent and a neutral odour. |
| Uses | Lanolin is used in industrial products like lubricants and coatings, and in skincare products for eczema, burns, and other skin conditions. Lanolin alcohol is used in cosmetics and skincare products as an emulsifier and stabiliser, and in medical applications to aid wound healing and deliver drugs to body tissues. |
| Allergies and Sensitivities | Lanolin allergies are on the rise, with some studies indicating reactions in patients with dermatological disorders and chronic wounds. Lanolin alcohol may cause comedogenic effects, but overall, lanolin derivatives have a low incidence of sensitivity. |
| Regulatory Status | The use of lanolin in cosmetics was previously subject to labelling requirements in the European Cosmetics Directive, but this ruling was overturned in the 1980s. The FDA permits the use of lanolin and lanolin-derived ingredients, including lanolin alcohol, in over-the-counter drugs and food applications. |
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What You'll Learn
Lanolin and lanolin alcohol composition
Lanolin is a long-chain waxy ester that contains cholesterol, but with a different composition than human sebum. It is an ointment-like material isolated from wool that is sheared from sheep. Lanolin can be separated into lanolin oil, a liquid phase, and lanolin wax, a solid phase.
Lanolin alcohols are obtained from the hydrolysis of lanolin, a derivative of the fat-like sebaceous secretion of sheep. Lanolin alcohol is a refined mixture of high molecular weight alcohols with a mean molecular weight of 370. The majority fraction (75%) comprises sterols and triterpene alcohols, with cholesterol being the predominant component (36%), followed by lanosterol, agnosterol, and their dihydric derivatives.
Lanolin alcohol is a potent surface-active natural constituent found in wool grease products, comprising approximately 50% of the total weight of lanolin anhydrous. Chemically bound within ester compounds, lanolin alcohol is obtained through an alkaline treatment of lanolin, followed by the removal of the resulting soaps. Further refinement is achieved through a multi-stage molecular distillation process, enhancing colour and odour and resulting in a purified, semi-crystalline, and virtually colourless wax.
Lanolin alcohol is used as an emulsifier and stabiliser in cosmetics and toiletries. Its ability to provide a neutral odour and maintain a white appearance is particularly advantageous. Lanolin alcohol is also used in medical and pharmaceutical applications, such as dermal patches and topical products, to aid in the wound-healing process and deliver medicinal drugs to body tissues.
Lanolin, on the other hand, is used commercially in many industrial products ranging from rustproof coatings to lubricants. It is also used in dermatological products designed for the treatment of compromised skin conditions. Lanolin possesses water-repellent properties, making it valuable as a lubricant grease where corrosion would otherwise be a problem.
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Lanolin alcohol's uses in skincare
Lanolin is a natural, animal-derived substance harvested from sheep's wool. It is a long-chain waxy ester that contains cholesterol and has been used for thousands of years in ointments. Lanolin alcohol, on the other hand, is a derivative of lanolin and is obtained through the hydrolysis of lanolin, which separates the lanolin into lanolin acid and lanolin alcohol.
Lanolin alcohols have been used extensively in skincare and cosmetic products for over a century due to their emollient, emulsifying, and stabilising properties. Here are some specific uses:
Moisturisation and Hydration
Lanolin alcohol is a rich source of cholesterol, a vital skin lipid. It can hold twice its weight in water, helping to plump the skin and reduce the appearance of fine lines and wrinkles. Lanolin alcohol also prevents transepidermal water loss by forming a barrier on the skin, thus keeping the skin moisturised.
Wound Healing
Lanolin alcohol has been shown to aid in the wound-healing process. When blended with petrolatum, lanolin alcohol can be applied to injured tissue, helping to maintain its physical state without interfering with the healing process. This makes it valuable in medical and pharmaceutical applications, such as dermal patches and topical treatments for delivering medicinal drugs to body tissues.
Emulsification and Stabilisation
Lanolin alcohol is an effective emulsifier, particularly in water-in-oil (w/o) emulsions. Its ability to stabilise across a wide pH range makes it suitable for use in both acidic and alkaline emulsions, including hair bleaching agents.
Anti-Allergic Properties
While there has been a rising incidence of lanolin allergy, lanolin alcohols have been shown to have a low incidence of sensitivity among exposed persons. This makes lanolin alcohol a safer alternative for individuals who may be allergic to pure lanolin.
Other Uses
Lanolin alcohol is also used as a moisturising additive in hair dye systems and has applications in ophthalmic ointments and dermatological emulsions for treating infections.
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Lanolin's uses outside skincare
Lanolin is a natural moisturising wax extracted from sheep's wool. It is used in skincare products ranging from eye creams to lip balms and in some prescription creams. Lanolin is also used in industrial products, such as:
- Rustproof coatings
- Lubricants
- Coatings for marine propellers to prevent barnacles from adhering
- Corrosion preventatives in marine fasteners
Lanolin alcohol is a mixture of organic alcohols obtained from the hydrolysis of lanolin. It is a refined mixture of high molecular weight alcohols with a mean molecular weight of 370. Lanolin alcohol is used in absorption bases, dermal patches, and topical products to deliver medicinal drugs to body tissues. It is also used in cosmetics and toiletries as an emulsifier and stabiliser.
Lanolin has been used to create slippery surfaces on marine propellers and stern gear, to which barnacles cannot adhere. Lanolin is also used as a lubricant in baseball gloves and as a raw material for producing vitamin D3.
Lanolin alcohol has been used in dermal patches and topical products to deliver medicinal drugs, such as antiseptics and antibiotics, to body tissues. It is also used in hair bleaching agents and has the ability to aid in the wound-healing process, making it valuable in medical and pharmaceutical applications.
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Lanolin allergy
Lanolin is a complex mixture of high molecular weight esters, aliphatic alcohols, sterols, fatty acids, and hydrocarbons. It is derived from the wool grease of sheep and has been used for centuries for its emollient properties. Lanolin is a common ingredient in skincare products, pharmaceutical preparations, cosmetics, toiletries, and industrial products.
The prevalence of lanolin contact allergy is a subject of debate. While some studies suggest lower rates of allergy in the general population (0.5%), others indicate higher rates of allergy in patients with dermatological conditions such as dermatitis (1.2%-6.9%). It is worth noting that individuals with broken or compromised skin due to pre-existing skin conditions or wounds are at a higher risk of developing a lanolin allergy. Additionally, children and older adults are also more susceptible to lanolin allergies due to the higher prevalence of atopic dermatitis in these age groups.
The diagnosis of lanolin allergy is typically made through patch testing, although the reliability of these tests has been questioned due to the varying compositions of lanolin and the lack of standardised testing procedures. However, once lanolin is identified as the allergen, education and avoidance are key to treatment and prevention. Individuals with lanolin allergies should carefully read product labels and avoid using products that contain lanolin or its derivatives.
Lanolin alcohol, on the other hand, is a derivative of lanolin. It is a refined mixture of high molecular weight alcohols, with cholesterol as its predominant component. Lanolin alcohol is obtained through the alkaline treatment of lanolin, followed by the removal of soaps and further refined through molecular distillation. This process results in a purified, semi-crystalline, and virtually colourless wax. Lanolin alcohol is a potent surface-active agent and is widely used in cosmetics, toiletries, and medical applications due to its emulsifying, stabilising, and wound-healing properties.
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Lanolin and lanolin alcohol safety standards
Lanolin is a complex mixture of high molecular weight esters of fatty acids with aliphatic and alicyclic alcohols and sterols. It is isolated from wool sheared from sheep. Lanolin can be separated into lanolin oil and lanolin wax. Heating lanolin with water (hydrolysis) produces lanolin acid and lanolin alcohol. Lanolin alcohol is a refined mixture of high molecular weight alcohols with a mean molecular weight of 370. It is obtained through an alkaline treatment of lanolin, followed by the removal of the resulting soaps. Lanolin alcohol is a natural constituent of wool grease products and comprises approximately 50% of the total weight of lanolin anhydrous.
Lanolin and its derivatives, including lanolin alcohol, are widely used in cosmetics and personal care products, as well as in dermatological treatments. Lanolin alcohol is known to aid in the wound-healing process, making it valuable in pharmaceutical products. Lanolin alcohol is also used in medical applications, such as dermal patches and topical products, to deliver medicinal drugs to body tissues.
Despite the extensive use of lanolin and its derivatives in consumer products, concerns have been raised about their safety. In the early 1950s, a study at New York University Hospital found that about 1% of patients with dermatological disorders were allergic to lanolin. This led to a European Cosmetics Directive in 1976, requiring cosmetics containing lanolin to be labelled, which was later overturned due to its detrimental impact on the lanolin industry. However, modern analytical methods have revealed that lanolin has important chemical and physical similarities to human stratum corneum lipids, which regulate skin hydration.
To address safety concerns, organisations like EWG Skin Deep and LipSafe provide ingredient hazard scores and product safety information for consumers. These scores reflect the potential hazards and data availability for ingredients in cosmetics and personal care products. Additionally, the EWG Verified mark indicates that a product meets strict criteria for transparency and health. Lanis AL EP Plus is an example of an ultra-pure grade of lanolin alcohol that complies with stringent EU foodstuff standards for residual contaminants. It is designed to meet advanced consumer safety requirements by removing impurities and potentially allergenic components, making it suitable for sensitive skin applications.
Overall, while lanolin and lanolin alcohol are prevalent in various consumer products, safety standards and consumer resources are available to help individuals make informed choices and ensure the safe use of these substances.
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Frequently asked questions
Lanolin is a long-chain waxy ester that contains cholesterol and is derived from wool grease. It is used in many industrial products, from lubricants to skincare.
Lanolin alcohol is a mixture of organic alcohols derived from the hydrolysis of lanolin. It is a refined mixture of high molecular weight alcohols with a mean molecular weight of 370.
Lanolin is composed predominantly of long-chain waxy esters, with the remainder being lanolin alcohols, lanolin acids, and lanolin hydrocarbons. Lanolin alcohol, on the other hand, is composed of high molecular weight alcohols, with sterols and triterpene alcohols as the majority fraction.
Lanolin is commonly used in industrial products such as rustproof coatings and lubricants. It is also used in skincare products, particularly those aimed at treating eczema, burns, and other skin conditions. Lanolin alcohol is commonly used in cosmetics and skincare products as an emulsifier and stabiliser due to its waxy texture and mild scent. It is also used in medical applications, such as aiding in the wound-healing process.
Lanolin has been associated with allergies in some individuals, particularly those with dermatological disorders. However, modern analytical methods have shown that lanolin has many chemical and physical similarities to human stratum corneum lipids, which regulate skin hydration. Lanolin alcohol has been extensively tested and is generally considered safe for use in cosmetics and personal care products, with a low incidence of sensitivity among exposed persons. However, those with wool or lanolin allergies should avoid acetylated lanolin alcohol as it can be inflammatory.
