The first step is to see if you have any signs of silicone build up on your hair.  Despite regular washing, hair may feel oily  and or heavy, necessitating more frequent cleaning.  It can become difficult to manage or style, with curls not holding or straight or fine hair appearing limp.  Hair may appear flat, lacking natural bounce and shine.  

Some silicones can also dry hair out after long-term use and contribute to breakage, which may manifest as thinning.  Furthermore, the strong sulfates found in clarifying shampoos that are sometimes used to remove silicone accumulation might irritate the scalp and worsen preexisting hair loss issues.  Using a gentler clarifying shampoo or trying a homemade alternative may be a better option like the guideline below.

Natural oils are wonderful for locking in moisture and imparting shine.  Apply a few drops to damp hair or dried hair (if you hair is fine), concentrating on the mid-ends to ends to avoid dryness and breakage.  This not only nourishes the hair but also protects it against environmental damage and heat.  Here are the recomended oils for different hair types.  Experiment with which ones work best for you.  Always make sure your oils do not come with added ingredients or silicones.