Citrus reticulata, also known as the mandarin orange or tangerine, is a small citrus tree with fruit resembling other oranges. A 2016 study published in the journal Pharmacognosy Research evaluated the skin anti-aging potential of Citrus reticulata peel extract. The study found that the extract possesses strong antioxidant activity, as well as anti-collagenase and anti-elastase activity. Collagenase and elastase are enzymes that break down collagen and elastin, respectively. Since collagen and elastin are responsible for maintaining skin strength and elasticity, preventing the degradation of these proteins is important. Thus, Citrus reticulata peel extract is an ideal ingredient for anti-aging products.