There are numerous kinds of shampoo, including vitamin-enriched, fruit-enhanced, color-sensitive, therapeutic, and so on. shampoo that simply promises to clean hair, however, has seen declining sales, has little or no advertising, and has been phased out by most manufacturers. shampoo that makes no other promise than to clean hair is in the stage of its product life cycle.

There are numerous kinds of shampoo, including vitamin-enriched, fruit-enhanced, color-sensitive, therapeutic, and so on. Shampoo that simply promises to clean hair, however, has seen declining sales, has little or no advertising, and has been phased out by most manufacturers. Shampoo that makes no other promise than to clean hair is in the decline stage of its product life cycle.

The decline stage of the product life system is when product is slowing down due to negative feedback or not enough growth is happening. The product that isn't spending the time to advertise and have benefits for the consumer is liking not going to be having a great return on investment and is declining in sales and brand awareness.