Shea Moisture has heavy oils and shea butter very high in the ingredients list. These can have a drying affect on low porosity hair types. The cuticle lies flat, so all the shea butter does is seal the moisture OUT of the hair, not good. Look for humectants that draw moisture inside of the hair. Kinky curly is full of humectants and is a good line to try or gvp cb. Clarify or low poo the shea butter or oils out with Kinky Curly Come Clean or another clarifier.
If you have fine or wavy hair, Shea Moisture might be too heavy for your hair, weighing it down. Hair will look greasy, dull, or weighed-down or will be over-conditioned. Again clarify or low poo to get back on track and start using something lighter and less moisturizing.
Shea Moisture can also cause a waxy-coated feeling or tangles on many hair types. Regardless, depending on your hair type and environment Shea Moisture may still build up on your hair and scalp so just be aware. It is ok to use if it works for you, but just know it could possibly do this. I have had to decrease using their products as often because they are building up on my scalp since I am becoming lower porosity on my healthy unbleached roots. I was getting an itchy scalp and white flakes on my roots. High porosity and curlier types generally fair better with Shea Moisture. It seals the moisture in on porous hair types. The hair is more porous so it doesn't build up as easily.