Lansinoh HPA Lanolin soothes, softens and protects dry cracked nipples. Safe for Baby - Relief for mom! Lansinoh HPA Lanolin has been refined by a patented process to remove all allergenic components (identified as the free lanolin alcohols in combination with detergent residues left over from the wool scouring process) and to bring to the lowest level possible any environmental impurities (including pesticide residues). Because of the purity of Lansinoh HPA Lanolin, it does not have to be removed prior to breastfeeding.