As with any product, product quality and correct usage are the key to positive results.
Make sure you are using PURE, UNREFINED shea butter. Using it in a cream with added ingredients (like MINERAL OIL) will, of course, exacerbate your skin problems.
If you find that the shea feels too heavy, try this: While your face is still wet from cleansing, rub a pea sized bit of shea butter between your palms until it liquifies, then smooth over your face. Blot dry with a towel. This will leave your freshly washed face absolutely glowing!
I only use the shea at night, when I cleanse with black soap or Original Neutrogena, follow with vitamin A gel, then smooth the shea butter all over my face. The shea absorbs quite swiftly, and leaves no greasy film.
During the day, I add a bit of shea butter over my eye cream, then blot the excess so my shadow doesn't slide off. I also use it as lip balm, which feels amazing!
I was also impressed by the shea butter's ability to heal wounds quickly. I recently cut my hand rather severely on a piece of shattered glass. I cleaned the wound, and went to sleep. In the morning, I applied a bit of shea butter to the cut, making sure to rub it in well. I continued to do this every few hours, and three days after cutting my hand, there was no redness, no visible scab, and no pain. Also, no scar. :)
I highly recommend this product to anyone, and suggest you purchase it from a fair trade supplier. I purchased mine on Amazon; $5.65 for one pound.