Lanolin Alcohol
Also known as Wool Wax Alcohols, Lanolin Alcohols, Wool Alcohol
“CIR Expert Panel says: safe as used in cosmetics.”
CIR has found Lanolin Alcohol safe (Finding=S) in its original 1980 safety assessment and confirmed that finding in 2003 and 2005. The primary safety concern documented in the peer-reviewed literature is contact sensitization, though the magnitude of this risk is contested: Kligman (1998) argued that lanolin is at most a weak sensitizer on intact skin and that many reported cases reflect false positives, while Silverberg et al. (2022) found a 3.3% overall positive patch test rate in 43,691 patients (rising to 4.63% in 2011-2018), with risk concentrated in patients with damaged or compromised skin barriers. Patch test methodology itself is disputed for this ingredient, as testing normal skin may underdetect sensitization in patients with damaged skin (the 'lanolin paradox').
Effective emollient and occlusive agent in heavy creams and ointments (e.g., Nivea, Eucerin formulations); reduces transepidermal water loss.
Functions as emulsifier and co-emulsifier, stabilizing water-in-oil emulsions at low concentrations.
Sterol-rich fraction of lanolin provides skin-compatible lipid composition that mimics aspects of the skin's own lipid barrier.
Hair conditioning and anti-static properties.
- · Patch test reproducibility for lanolin alcohol is modest (approximately 27-31%), complicating clinical assessment.
Contact sensitization risk: patch test positivity rates of approximately 3-5% in dermatology clinic populations, with highest risk in patients with compromised or damaged skin barriers (venous stasis dermatitis, eczema, post-surgical skin). Known as the 'lanolin paradox': sensitization rates differ significantly between intact and damaged skin, and testing on intact skin may produce false negatives for patients with damaged skin.
Pesticide/contaminant residues historically present in crude lanolin from sheep dipping. Modern pharmaceutical-grade (USP/Ph.Eur.) Lanolin Alcohol is subject to refining standards that control for these residues; the concern applies primarily to unrefined or low-grade material. No equivalent structural EU Annex restriction for Lanolin Alcohol has been identified (contrast with some refined petrolatum conditions).
CIR Quick Reference Table (12/2017, revised 07/2018) — LANOLIN ALCOHOL row: Finding=S, Citation=JEPT 4(4):63-92, 1980 confirmed 02/03 IJT…
“Lanolin Alcohol S JEPT 4(4):63 -92, 1980 confirmed 02/03 IJT 24(S1):2-10, 2005”— QRT-122017revised072018.pdf, p. 68