A "brush applicator" refers to a tool or device that has a brush attached to it. It is used for applying or spreading substances such as paint, glue, or makeup onto a surface. Full definition
I love the felt tip brush applicator so it makes it easier to apply and you can draw as thin or as thick of a line you want. (beautylish.com)
The loose powder formula fills in smooth color, while the thick - to - thin brush applicator creates instant definition. (maybelline.com)
While many people are calling the range «glitter liners» thanks the skinny tip brush applicator they come with, they're meant to be used anywhere on your face, eyes, and body. (bustle.com)