Small amounts of mineral oil can be found in breastmilk, apparently from absorption of hydrocarbons from cosmetics over long periods of time. Because mineral oil is poorly absorbed orally, little or none will not reach the bloodstream of the infant or cause any adverse effects in breastfed infants.[1] One small study supports the lack of effect of maternal mineral oil on the bowels of their breastfed infants. Oral use of mineral oil by the nursing mother is acceptable, although repeated use should be avoided because it may cause a deficiency of fat-soluble vitamins. The use of mineral oil or ointments containing mineral oil on or near the breast may expose the infant to high levels of mineral paraffins via licking.[2] Only water-miscible cream products should be applied to the breast.