Camellia Sinensis Leaf Extract

This is also known as green tea extract. The most useful components of the tea are called polyphenols, and even more precisely catechins. It is a great Antioxidant and protects the skin from UV damage and erythema (redness). It is also known to be anticarcinogenic by inhibiting DNA damage and even activates some enzymes that help with DNA repair. It also acts as an anti-inflammatory and antimicrobial - excellent for acne prone skin types. 

Journal Der Deutschen Dermatologischen Gesellschaft, Volume 13 (8)– Aug 1, 2015, Green tea in dermatology – myths and facts

Oxidative Medicine and Cellular Longevity, Volume 2012 (2012) – Jun 26, 2012 Protective Mechanisms of Green Tea Polyphenols in Skin

Journal of Drugs in Dermatology : JDD, [2009, 8(4):358-364], The efficacy of topical 2% green tea lotion in mild-to-moderate acne vulgaris.