Read this scenario to answer Question 4.

Simone: One more question! I'm looking for a new shampoo, but they all contain so many ingredients. What ingredient does the shampoo need to include in order to remove the excess oil and dirt from my hair?

How would you answer Simone's question? To help remove excess oil and dirt, the shampoo should include a:

Question

Read this scenario to answer Question 4.

Simone: One more question! I'm looking for a new shampoo, but they all contain so many ingredients. What ingredient does the shampoo need to include in order to remove the excess oil and dirt from my hair?

How would you answer Simone's question? To help remove excess oil and dirt, the shampoo should include a:

BlackTom AI · Accepted Answer

The scenario asks what ingredient a shampoo should include to help remove excess oil and dirt from hair, guiding us to select the component responsible for cleansing.
Option 1: Conditioner. This ingredient is primarily used to soften hair and reduce static after shampooing, not to remove oil or dirt. It can even leave a coating on hair if used in excess, which would not aid in cleansing.
Option 2: Surfactant. Surfactants are the cleansing agents in shampoos; they lower surface tension and help emulsify oils and dirt so they can be rinsed away with water. This directly addresses the need to remove excess oil and dirt from the hair, making this the correct mechanism.
Option 3: Preservative. Preservatives prevent microbial growth in the product itself, ensuring safety and shelf-life. They do not contribute to cleansing or removing oil and dirt from hair.
Option 4: Thickener. Thickeners adjust the viscosity of the shampoo, giving it the desired feel and texture. They do not play a primary role in cleansing oil and dirt from the hair.
In summary, the cleansing action required to remove oil and dirt is achieved by a surfactant, whereas conditioner, preservatives, and thickeners serve other purposes related to conditioning, product safety, and viscosity, not direct cleansing.

类似问题

Based on the structure of this surfactant (which has has a hydrophobic to hydrophilic ratio of 1:1), which of the following statements are true?

3. Fill-in the blanks based on your understanding of how regular shampoos work. Shampoos contain surfactants to help cleanse hair. The hydrophobic component interacts with the oil/dirt in the hair, while the hydrophilic component interacts with the water, helping remove the oil/dirt from the hair.

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