Rose red dye is used to add red color to glass, wool, terracotta, concrete powder, banner and shulker box.
To make rose red dye, you just need to get Poppy, Red Tulip or Rose Bush and then will have to use a Crafting Table. Please follow the following steps to make Rose Red Dye.
Poppy, Red Tulip or Rose Bush
In order to make a rose red dye, the basic item that you will have to find and get is any flower among Poppy, Red Tulip or Rose Bush. You can easily find some in fields.
Rose Red Dye
Now you can make a Rose Red Dye using the crafting table. Open up 3*3 crafting grid and add Poppy, red tulip or Rose Bush in any cell to craft Rose Red Dye. Always remember to take this Red dye in inventory to use later. Poppy and red tulip will give you one red dye each but rose bush will give you two dyes.