If you use the BOM system you can also use the high definition (HD) layers in onion layers, but in our case it will not be necessary to use the applier because they use several channels of the BOM system that are not usually in use, we have chosen these channels for using them to have heads with HD layers and 100% BOM.
We are going to use the Left Leg Tattoo and Aux2 Tattoo channels to be able to inject eyebrows, eye shadow, eyelashes and lips independently since BOM is a cumulative system and allows adding layers upon layers, that is, we will use 2 BOM channels for 4 uses different, the reason is that we have taken advantage of all the space that the system allows us to share 2 textures in one texture.