This is extracted from algae and the active ingredient is primarily Carotenoids which plants and algae use for Photosynthesis. Repashy Superfoods which does Reptile diets makes a similar product and Lllreptile sells it on their website. However I'm not sure how much effect this will have on a collared lizard since their diet is pretty much carnivorous they only probably get a little of this in their diet from prey. Many people claim they see better coloration in their reptiles from MVB bulbs which tend to more closely mimic direct sunlight.