OMgosh. I have found out by using the Scrubble Bubbles shower spray that it comes right out. You spray it on and let it sit about 5 minutes and then rinse. It even takes off the water residue from the shower doors, etc. It's worth the cost too. You can buy one that goes around by itself but I use the one to use when you get out once a week. I am so happy. Even shines up the faucets. Hope this works for you.♥♥