"Synthetic chemicals" refers to substances that are made by humans in laboratories rather than being found naturally in the environment. Full definition
Though this is depressing, understanding the situation can help you better protect your body from the tens of thousands of synthetic chemicals in our environment. (susancnt.com)
Although studies have failed to establish a causal relationship, some scientists and activist groups continue to emphasize the role of trace levels of synthetic chemicals in human illness. (acsh.org)
Conventional lipsticks are made with synthetic chemicals, dyes, preservatives or toxins: basically everything you want to keep away from your lips! (100percentpure.com)