See recent 10x points events.
Every year Platinum members at Ulta get a one day event where select items are available for 10x points. Yes, this combines with any other multipliers you may have. Read my Ulta page for the rules on combining multipliers (if you’re lucky enough to have more than one). This event is always at the end of August and has not included every item in the store since 2014. In 2015, only select items were included. It landed on Monday, August 24th. Ulta is on central time, so it officially started 08/23/15 at 10pm PST. The problem is the emails with the specific items included did not go out until the following morning. Those who got there at 10pm had to play with their carts a bit to see which items calculated at 10x points to beat the rush and avoid things selling out as we slept.