Different Sephora stores carry different products and brands. So the only way to know what a specific store carries is to call that store and ask or go to the store and find out. I'll give you a link to the Sephora Store Locator which has the phone numbers (and addresses) for all Sephora stores across the country. If you have a specific Sephora store close to you and you want to know if they have a certain product, just look them up on the store locator and give them a call. Here's the link: http://www.sephora.com/help/stores/index.jhtml
Hope this helps!
Have a great day!