Before we go into the study of each ingredient, I'd like to point out that the new Costco wipes recipe has significant improvements. For starters, there is no longer any hazardous formaldehyde and no risk of exposure to 1,4-dioxane, a potentially carcinogenic pollutant. There are still only three ingredients - cellulose fibers, water, and natural extracts/oils - but now they are mixed together in one step instead of two. Before you ask, the green color comes from chlorophyll, which gives wheat flour its color. Kirkland's brand of cloth diaper wipes contains three primary ingredients: cellulose fibers, water, and natural oils or extracts. Like many other baby products that use these three ingredients, this wipe product does not contain any chemicals that would put your health at risk. There have been studies done on people who use lotion daily that contain phthalates, which are chemicals used to make plastics more flexible. These people are more likely to develop cancer later in life. However, if you don't ever use lotion and never apply makeup, then you aren't putting yourself at risk of developing cancer. The same goes for wipes. You are not going to die if you use these wipes. In fact, they are probably going to do some good because they will help clean your little one's bum.