Final answer:
Lanolin is a substance found in moisturizing creams that softens and improves the health of the scalp.
Step-by-step explanation:
One substance that can be found in a moisturizing cream to soften and improve the health of the scalp is lanolin. Lanolin is a natural wax that is derived from sheep's wool and is commonly used as an emollient in skincare products. It helps to lock in moisture, soften the skin, and alleviate dryness or itching.