Is it ok for breastfeeding moms to use skincare products with cyclopentasiloxane,             cyclomethicone, peg 10 dimethicone and aluminum dioxid?

Appears to be safe. The chemicals mentioned mainly stay in the upper layers of the skin- miniscule amounts go into the body. If you have other questions here is a great website: breastfeeding and medications http://www.Breastfeedingonline.Com/meds.Shtml#sthash.5ld4zlrc.Dpbs it is from dr. Thomas hale a texas tech pharmacologists+ includes link to toxnet national library of medicine.