Lanolin is a natural wax derived from sheep’s wool, originally protecting the animal’s fleece and skin. This waxy substance is extracted from shorn wool and undergoes rigorous purification for human skin care use. For nursing mothers, lanolin primarily provides soothing relief and treatment for painful, dry, or cracked nipples caused by frequent breastfeeding. Its composition is remarkably similar to the oils naturally secreted by human skin.
How Lanolin Heals and Protects
Lanolin functions as an occlusive moisturizer, creating a physical barrier on the skin’s surface. This thick, waxy layer significantly slows down transepidermal water loss, effectively trapping the skin’s existing moisture beneath the surface. By preventing this moisture from evaporating, lanolin helps to maintain a hydrated environment that is conducive to the skin’s natural repair mechanisms. Research indicates that lanolin can reduce water loss from the skin by approximately 20 to 30 percent.
This creation of a moist healing environment is a specific biological process that promotes rapid wound repair. When skin heals in a damp setting, new epithelial cells migrate across the wound more easily, which accelerates the healing of superficial cracks and fissures. The emollient properties of the wax also soften damaged skin, improving flexibility and reducing discomfort associated with friction during feeding. The protective film shields sensitive tissue from further irritation caused by clothing or contact between feedings.
Applying Lanolin Correctly
To maximize lanolin’s therapeutic effect, apply it immediately after a nursing session, not right before, allowing time for absorption and conditioning. First, wash your hands thoroughly with soap and water to prevent transferring any bacteria to the irritated skin. Dispense a small, pea-sized amount of lanolin cream onto your fingertip, as a little bit of the concentrated wax goes a long way.
Since lanolin may be slightly firm, it is helpful to gently warm and soften the wax between your clean fingers before application. Carefully apply this warmed portion to the entire surface of the nipple and areola, ensuring cracked or sore areas are fully covered. Consistent reapplication after every feeding or as frequently as needed will maintain the protective barrier and continuous moist healing environment. Applying a layer before showering can also protect sensitive tissue from the drying effects of soap and hot water.
Safety and Purity for the Nursing Infant
Lanolin products marketed for breastfeeding mothers undergo intensive purification to ensure they are safe for the baby, even if accidentally ingested. This refining process removes common impurities like pesticide residues and detergents, resulting in an ultra-pure or medical-grade product, often designated as USP modified lanolin. This high standard of purity means these products typically do not contain taste, color, or added fragrance.
Because of this extensive purification, the majority of highly refined lanolin creams do not need to be removed before the baby latches on for the next feeding. The absence of preservatives or additives means the baby is not ingesting potentially harmful chemicals. While lanolin allergy is exceedingly rare, especially with purified forms, mothers with a known allergy to wool should consult a healthcare provider for alternative options before use.