Florida Barber License Practice Test

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What kind of solutions can neutralize defects in hair?

Acidic solutions
Neutral solutions
Alkaline solutions
Buffer solutions

The correct answer is: Acidic solutions

The ability of acidic solutions to neutralize defects in hair is tied to the way hair's pH balance interacts with its structure. Hair has a natural pH level that ranges from about 4.5 to 5.5, which is slightly acidic. When hair is treated with alkaline products, the cuticle can lift, leading to issues such as frizz, damage, or loss of moisture. Acidic solutions can help restore the pH to a level that is closer to its natural state, allowing the cuticle to lay flat, which can enhance shine and smoothness. In contrast to acidic solutions, neutral solutions do not actively engage with hair's pH balance, which means they don't exert the necessary influence to correct pH-related issues in hair. Alkaline solutions would have the opposite effect, potentially exacerbating defects rather than neutralizing them. Buffer solutions can help stabilize pH levels but are not specifically designed to correct defects in hair the way acidic solutions do. Therefore, the most appropriate solution for neutralizing hair defects is indeed an acidic solution.