As a beauty editor at women’s magazines and CNN, author Julie Gabriel had no hesitation endorsing the season’s hottest lipstick shade, or justifying the purchase of the latest anti-aging cream. But after years of following the trends, she began to hesitate as she faced the not-so-pretty side of the cosmetics industry. She left the mainstream cosmetics industry behind, trained as a nutrition specialist and launched her own cosmetics line, Petite Marie Organics.

The Green Beauty Guide is the knowledge-packed proof of Gabriel’s beauty awakening. It offers expert advice to help steer your beauty routine toward …