When choosing a round brush, which material is NOT typically used as a core?

When choosing a round brush, which material is NOT typically used as a core?

• A. Leather
• B. Metal
• C. Wood
• D. Plastic

Answer: (A)

Round brush cores need to be rigid, durable, and able to withstand heat and moisture without warping. Metal, wood, and plastic meet those needs because they’re stable, shape-holding, and resist the heat from styling tools. Leather, on the other hand, lacks dimensional stability under heat and moisture: it can stretch, deform, or absorb moisture and oils, which compromises bristle retention and the brush’s shape. Because of that, leather isn’t typically used as a core.

Round brush cores need to be rigid, durable, and able to withstand heat and moisture without warping. Metal, wood, and plastic meet those needs because they’re stable, shape-holding, and resist the heat from styling tools. Leather, on the other hand, lacks dimensional stability under heat and moisture: it can stretch, deform, or absorb moisture and oils, which compromises bristle retention and the brush’s shape. Because of that, leather isn’t typically used as a core.