PSI Barbering Practice Exam

Astringents may have an alcohol content of up to what percentage?

1. 20%

2. 30%

3. 35%

4. 50%

The correct answer is: 35%

Astringents are used in skincare and barbering to help tighten the skin and reduce oiliness, often benefiting clients with oily or acne-prone skin. The proper formulation of astringents typically involves a certain percentage of alcohol, as it serves as an effective antiseptic and aids in the tightening process. The correct answer indicates that astringents can contain alcohol content of up to 35%. This level balances efficacy in controlling excess oil and bacteria while minimizing the potential for excessive dryness or irritation that higher concentrations might cause. While options suggest lower and higher percentages, 35% is the upper limit for astringents to remain effective and safe for application on the skin. Higher concentrations, such as 50%, may cause excessive dryness or irritation and are not typically recommended for facial astringents. Thus, understanding these formulations is vital for barbers when recommending products to clients based on their skin types and needs.