Cochineal — a red dye derived from scale insects — is widely used in food, cosmetics, and textiles, raising minor but nonzero questions about the welfare of the insects involved.
Cochineal production raises welfare questions at the extreme end of moral uncertainty. Scale insects are among the simplest of the arthropods, with nervous systems far less complex than those of insects like bees that have stronger empirical cases for welfare consideration. The scientific evidence for cochineal insect sentience is essentially absent, and most welfare scientists would not prioritise this issue relative to the vast scale of suffering in vertebrate farming. However, the issue is not entirely dismissible from a pure moral consistency standpoint: if we take uncertainty seriously for some insects, we should acknowledge it exists for all. For most practical welfare purposes, cochineal sits below the action threshold, but transparency about its animal origin remains important for consumer choice.