Tear staining is caused by excessive eye-watering and the gradual infestation of common “red yeast”. Shear Magic Tear stain remover reduces tear stains safely with a non-irritating formula. Contains Boric Acid which oxidizes the iron in the porphyrins (dye molecule causing the tear stain) and lightens the reddish colour. Antibacterial agent. Bleach free. Safe and gentle on eyes. Soothing Aloe Vera and Vitamin E. Biodegradable. 100% soap free.