70% alcohol on the hairstrand for 5-7mins can remove:

70% alcohol on the hairstrand for 5-7mins can remove:

• A. Hydrogen peroxide
• B. Henna
• C. Water
• D. Acetone

Answer: (B)

Alcohol acts as a solvent that can dissolve surface-level color deposits on the hair. Henna sits on the outer layers of the hair shaft rather than bonding deeply into the cortex, so a relatively strong solvent like 70% alcohol, given enough contact time, can loosen and dissolve the henna pigments and allow them to be washed away. The other options don’t work the same way: hydrogen peroxide oxidizes dyes and changes their color rather than simply dissolving the pigment, water isn’t a solvent strong enough to move dye, and acetone is a harsher solvent not typically used for removing henna. In this scenario, the alcohol soak is effective for removing henna.

Alcohol acts as a solvent that can dissolve surface-level color deposits on the hair. Henna sits on the outer layers of the hair shaft rather than bonding deeply into the cortex, so a relatively strong solvent like 70% alcohol, given enough contact time, can loosen and dissolve the henna pigments and allow them to be washed away. The other options don’t work the same way: hydrogen peroxide oxidizes dyes and changes their color rather than simply dissolving the pigment, water isn’t a solvent strong enough to move dye, and acetone is a harsher solvent not typically used for removing henna. In this scenario, the alcohol soak is effective for removing henna.