.....Yes, yes, yes...you sure can!
My mom used to use baby lotion on my hair as a kid (mixed with an oil or light grease). I was told my hair smelled so yummy.
I know people who are using lotion with great results. Alot of them, however, mix it with an oil.
A good lotion to try is Shikai's all natural Hand and Body Lotion. It comes in different fragranes (I got the apricot rose and it smells heavenly). This lotion is a moisturizing formula with a bunch of good oils (apricot kernal, avocado, safflower, wheatgerm, etc.) May be something you want to try.