PubMed Central is a free digital archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health (NIH), developed and managed by NIH's National Center for Biotechnology Information (NCBI) in the National Library of Medicine (NLM).

With PubMed Central, NLM has taken the Lead in preserving and maintaining access to electronic literature, printed biomedical literature, scientific studies and their findings and especially many studies on the effects of various ingredients on the human body.

Examples of studies found on PubMed:

Human Breast Milk Contamination with Phthalates leads to exposure of fetus which could Lead to sexual development disorders.
Analysis of 2,517 urine samples from US population shows 96.8% exposed to benzophenone-3, a common sunscreen ingredient where animal studies have shown effects in liver, kidney, and reproductive organs.

Microwave Sanitization of Color Additives Used in Cosmetics
Microwave exposure has been explored as a method of microbiologically sanitizing color additives used in cosmetic products. Selected microbiologically unacceptable cosmetic color additives, D&C red no. 7 Ca lake (certified synthetic organic color), Carmine (natural organic color not subject to certification), and chromium hydroxide green (inorganic color not subject to certification), were submitted to microwave exposure.