What Is Acetylated Lanolin Ricinoleate?
Acetylated Lanolin Ricinoleate is a modified form of lanolin, the natural waxy substance obtained from sheep’s wool, that has been combined with ricinoleic acid from castor oil and then treated with acetic acid. This process creates an acetyl ester that is softer and less sticky than raw lanolin while keeping its water-resisting qualities. Lanolin derivatives have been included in skin care since the 1950s because they mimic skin lipids and help lock in moisture. To make this ingredient, manufacturers first blend purified lanolin with ricinoleic acid to produce lanolin ricinoleate, then react the blend with acetic anhydride under controlled heat to “acetylate” it, resulting in a smooth, odor-light wax. You will most often spot Acetylated Lanolin Ricinoleate in rich face creams, lipsticks, mascaras, balm-type moisturizers, hand lotions, night creams, anti-aging formulas, barrier creams and some hair styling products where lasting moisture and a soft protective feel are desired.
Acetylated Lanolin Ricinoleate’s Cosmetic Benefits/Uses
In personal care formulas this ingredient serves one main purpose that brings several feel-good perks.
As an occlusive, Acetylated Lanolin Ricinoleate forms a light breathable film on the skin or hair surface that slows down water loss. This helps creams and balms deliver longer-lasting hydration, boosts skin softness, smooths rough patches and adds a comfortable cushiony texture to the finished product.
Who Can Use Acetylated Lanolin Ricinoleate
This soft wax suits most dry, very dry or mature skin because it seals in moisture and leaves a cushioned feel. Normal skin usually tolerates it as well but people with oily or acne-prone skin may find it too rich since lanolin derivatives can sit on the surface and contribute to clogged pores.
The ingredient comes from sheep wool so it is not vegan friendly. Some vegetarians are comfortable with wool-derived materials while strict vegetarians may prefer to avoid it.
No specific warnings exist for pregnant or breastfeeding women when this ingredient is used in cosmetics. It is considered non-toxic and has a long record of safe use, but this is not medical advice and anyone who is pregnant or nursing should check with a doctor before adding new skincare to their routine to be safe.
Acetylated Lanolin Ricinoleate does not make skin more sensitive to sunlight and it does not interfere with common active ingredients such as retinoids or AHAs.
Potential Side Effects/Adverse Reactions
Reactions vary from person to person and the points below list potential issues only. When the ingredient is formulated correctly most users will not notice any problems.
- Clogged pores or breakouts in oily or acne-prone skin
- Allergic contact dermatitis in individuals sensitive to lanolin
- Redness, itching or localized rash on compromised or broken skin
- Watery eyes or mild stinging if the ingredient migrates into the eye area from mascara or cream products
- Rare folliculitis due to its highly occlusive film
If any irritation or discomfort occurs stop using the product and seek advice from a qualified healthcare professional.
Comedogenic Rating
Rating: 3 / 5. Although Acetylated Lanolin Ricinoleate is less sticky than raw lanolin its waxy film can still trap dead cells and sebum, which means it sits in the middle range for pore-clogging potential. Those prone to acne or frequent breakouts may want to steer clear or use it only in rinse-off or spot products. Its tendency to feel heavy is amplified when it appears high on an ingredient list or is paired with other rich oils and butters.
Summary
Acetylated Lanolin Ricinoleate acts mainly as an occlusive, forming a light water-resistant layer that slows moisture loss, softens rough patches and gives creams and makeup a smooth cushioned glide. It is moderately popular, showing up in traditional balm-style formulas and some color cosmetics but newer plant-based alternatives have taken the spotlight in recent years so use is steady rather than widespread. Safety reviews rate it as non-toxic with decades of cosmetic use backing its profile, yet individual sensitivities to lanolin do exist. As with any new skincare or makeup product it is wise to patch test first to make sure your skin agrees with it.