Resilient silicones should be used less frequently, since they are quite strong and must be washed out with a sulphate shampoo, which is recommended no more than 1-2 times per month. It is best to use your resilient silicones in the days leading up to your sulphate shampoo wash. Of course, you can also use them for special occasions where you want to have your hair extra soft and shiny. Also on special occasions you may want to heat style or do other stuff to your hair, in which case a resilient silicone will help protect your hair from that damage, which makes it worth it! Just be sure that you always follow up your resilient silicone application with a sulfate shampoo after 3-4 days maximum :D