Another study on the effects on our children of environmental chemicals (Propylene Glycol is a common ingredient in most skincare products for both babies and adults) - 

ScienceDaily (Oct. 19, 2010) – The use of chemicals in our everyday lives entails increased risks of allergies in children, according to a study at Karlstad University in Sweden. The prevalence of PGEs, propylene glycol and glycol ethers, in bedroom air is associated with asthma, hay fever, and eczema, but also with antibodies against common allergens in children. The study shows a risk increase of up to 180 percent.