Crystal Pepsi, the clear cola that failed in the 1990s market, was discontinued primarily because:

The food industry is filled with both spectacular successes and notable failures. One category of particularly interesting product launches are 'clear' or 'transparent' food items that emerged in the early 1990s. These products represented a unique marketing trend focused on perceived purity and healthfulness, but many disappeared quickly from store shelves. Test your knowledge about one of the most famous transparent food product failures and what ultimately led to its downfall.

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Consumers were confused by the clear appearance but cola taste, creating a sensory mismatch that affected enjoyment
The formula contained an artificial sweetener that caused allergic reactions in a significant portion of consumers
Coca-Cola sued PepsiCo for copyright infringement over the 'crystal clear' marketing concept
The transparent bottles led to rapid flavor deterioration when exposed to store lighting