That’s right, this week over at GOOD we’re talking about your face—and what you don’t want near it. For those of you who have read the book, this top-10 list of bad chemicals will likely be familiar. Hey, nothing wrong with a little refresher, right? Here’s the repost:

A quick skim of this list reads like a prescription from Dr. Obvious. Clearly nobody wants lead or petroleum on their faces, right? But if you’ve been reading this series, our blog, or our book, you know that the cosmetics industry uses all kinds of ingredients in its products—some dangerous, some just plain confusing. What many of them have in common is that that don’t belong anywhere near our largest organ.

Here’s why: Many of them have pretty damning scientific data on record. They’re also not doing anything for your appearance—and in some cases they may be making matters worse. And thus, here is our mantra: If you can’t be sure a product is safe, and it isn’t doing your looks any favors, why bother using it? With that in mind, here’s a top-10 list of common ingredients, contaminants, and byproducts that are bad for your health and duds for your face.

	1. Petroleum and related petrochemicals The danger risk for this group of ingredients ranges from a mellow yellow to code red. Petroleum distillates are toxic solvents used in mascara, hairspray, and callus treatments. But your run-of-the-mill moisturizer probably contains something like mineral oil or paraffin in it, which are not considered dangerous per se, they’re just really, really bad for the environment and they suffocate the skin and may interfere with perspiration.
	2. Lead-tainted lipstick In 2009 the FDA discovered that of 20 lipsticks it tested, 20 were contaminated with lead. In many cases, the lead levels exceeded those set by that same FDA for candy—and since they don’t set restrictions for cosmetics, this feels like a fair model of comparison, right? Not so according to the FDA, which claims that we don’t eat our lipstick. Lead is a neurotoxin and lipstick goes on our mouths, which combine to make this debate officially ridiculous. Go for organic small-batch lipstick lines, or kiss a beet instead.
	3. Formaldehyde-leaching preservatives Our crusade for clean cosmetics started after the discovery of formaldehyde in a hair treatment (and later in our nail polish), but this known carcinogen is also “donated,” as the pros like to say, by preservatives such as quaternium-15, DMDM-hydantoin, imidazolidinyl urea, and diazolidinyl urea. That means it’s both pervasive and often unlisted, not appearing as an ingredient on labels. It’s considered a human carcinogen by many health agencies worldwide, and when it’s not giving rats nose cancer, it might still be giving you a rash.
	4. Fragrance It’s broken-record time, but here goes: Fragrance is in everything from your fancy perfume to your face wash. It represents a concoction of mystery ingredients, whose secrecy is protected by industry-ass-kissing trade laws. Lab studies by the EWG have shown them to contain a whole cocktail of hormone disruptors(among other things). Which is nice, since our hormones regulate, oh, everything: genital size, fertility, weight, acne, and beyond.
See the next five Images by Brianna Harden	5. Parabens This popular preservative group used in more than 10,000 products became very controversial when their presence was discovered in the tissue of breast tumors. What that data actually means is hotly debated but studies have shown that certain parabens mimic estrogen, the female sex hormone. This could be bad news for both men and women. Look for ingredients on the label with “paraben” as a suffix to avoid these bad boys.