You can hide any item within your collection by clicking the “hide” link that appears on the item when you hover over it, and you can make your wishlist private by selecting “private” from the dropdown menu to the right of your wishlist on your collection page.
Can I make my collection private?
You can hide individual items in your collection by hovering over them and clicking "hide." To make your entire wishlist private, choose "private" from the dropdown menu located to the right of your wishlist on your collection page.