Sit down with your favorite skin care product and search each ingredient by using the search engine on the environmental working group (EWG). You may even find a form of "stearate," animal derived fat, already in your lotion, shampoo, lipstick, eyeliner, foundation. That fat is high in toxins- think cheap lubricant from fast-food derivative waste. Recognize the difference and make that change.
For your mobile device download EWG's app "Skin Deep" or "Think Dirty" so you can scan the barcode of cosmetics to check toxic ratings.