Pennsylvania Cosmetology Practice Exam 2025 - Free Cosmetology Practice Questions and Study Guide

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What kind of hair is typically more porous?

Brown hair

Black hair

Blonde hair

Blonde hair is typically more porous due to its structure and the processing it often undergoes. Porosity refers to the hair's ability to absorb moisture and chemicals, which is influenced by the cuticle layer's condition and density. Blonde hair, particularly when naturally occurring, often has a finer texture and a less compact cuticle layer. This makes it more receptive to absorbing color and moisture, leading to higher porosity.

Additionally, many individuals with blonde hair have chemically treated it more often than those with darker shades, further increasing porosity. This characteristic means that blonde hair can require more moisture and specialized products to maintain its health and shine, as it may lose hydration more quickly than hair with lower porosity.

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Red hair

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