What are the two basic requirements for maintaining a healthy scalp?

Maintaining a healthy scalp is essential for overall hair health, and the two basic requirements of cleanliness and stimulation play a crucial role in this process. Cleanliness refers to the removal of excess oils, dirt, and product buildup on the scalp, which can contribute to issues such as dandruff, irritation, and an unhealthy environment for hair growth. Regular cleansing ensures that the pores remain unclogged and that the scalp is free from harmful bacteria and fungi.

Stimulation involves promoting blood circulation in the scalp, which is vital for delivering essential nutrients and oxygen to the hair follicles. Techniques such as gentle massaging during washing can enhance this circulation, supporting healthier hair growth and improving the overall health of the scalp.

While the other choices include important aspects related to scalp care, they do not encompass the fundamental needs as effectively as cleanliness and stimulation do in fostering a healthy scalp environment. For instance, moisture and protection, as well as hydration and ventilation, are important but focus primarily on surface-level issues rather than addressing the core requirements for scalp health.