Is topically using coconut oil, castor oil, sweet almond oil, avocado oil & aloe vera gel (as homemade lash/brow serum) safe to use during pregnancy?

Pregnancy-safe oils. Castor oil and sweet almond oil may bring on early labor, if used earlier than term. Coconut oil and olive oil are safe in pregnancy. Topical vitamin E oil is felt to be safe, but may cause contact dermatitis in some people, as can topical aloe vera. "When in doubt, leave it out" applies in pregnancy. https://www.ncbi.nlm.nih.gov/pubmed/20306538 .