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Canthaxanthins are keto‐carotenoid pigments and are orange‐red in color, predominantly found in bacteria, fungi, algae, land plants, and animals. Being a carotenoid, they have a potential role in free radical scavenging and have antioxidant properties (initiated by catalase and superoxide dismutase) [144]. They are known to produce an orange‐brown color in the skin are used as sun tanning pills (Orobronze) [108, 145].