I have thin, straight hair yet I am madly in love with the Sunsilk Straighten Up conditioner!!!  Of all of the expensive salon brands and not so expensive store brands I have tried, this is my very favorite!  My hair feels so soft and smooth after I use it, yet it doesn't weigh my hair down.  And never any build up issues.   And the smell!  If you like strong,  long lasting scents, this conditioner is great!  It reminds me of the nostalgic Gee Your Hair Smells Terrific hair products.   I got my nieces hooked on this product too.