Carol,
When was the last time you washed your hair with a clarifying shampoo?
Sounds like product buildup. Over time, if you do not clarify the conditioners, leave-in conditioners, styling products, and gentle cleansing shampoos will all build up on your hair.
Once this happens the same products that worked before will appear not to work because the product buildup prevents the moisture from penetrating the hair shaft. Hair often feels dry even after using the same products that have worked previously when this happens.