Here are some possibilities:
* "I'm using one of those frosted head brushes to detangle my hair." This sentence makes it clear what the purpose of the frosted head brush is.
* "She's using one of those frosted head brushes, the ones with the soft bristles." This sentence clarifies what kind of frosted head brush is being used.
* "Is that one of those frosted head brushes?" This sentence is a question asking about the identity of the brush.
To improve the sentence, add context, such as:
* The purpose of using the brush: What are you doing with it?
* The type of brush: Is it a specific brand or model?
* The situation: Where are you using it?
By adding context, you can make the sentence more meaningful and understandable.