Question 29

Hair that absorbs liquid quickly and requires special care has high porosity.

High porosity hair has a cuticle layer that is lifted or damaged, allowing it to absorb moisture quickly but also leading to moisture loss. This characteristic necessitates special care to maintain hydration and prevent breakage.

A) average porosity.

Average porosity hair has a balanced cuticle layer that allows moisture to be absorbed and retained effectively. It does not require special care like high porosity hair, making this option incorrect.

B) little melanin.

Melanin content in hair relates to its color and does not influence porosity levels. Therefore, this option is irrelevant to the question regarding liquid absorption and hair care requirements.

C) high porosity.

High porosity hair is characterized by its ability to absorb water quickly due to gaps in the cuticle layer. This trait requires special care to help retain moisture and prevent damage, making this the correct answer.

D) no cortex.

The cortex is the middle layer of the hair and is crucial for its strength and texture. Hair with no cortex would be severely compromised and not typically discussed in terms of porosity, thus rendering this option incorrect.

Conclusion

The definition of high porosity directly aligns with the question's criteria of hair that absorbs liquid quickly and requires special care. Other options do not accurately address the concept of porosity or the specific care needs related to moisture absorption. Therefore, high porosity is the definitive answer.