Final answer:
Scalp cleansers remove excess sebum from the scalp, maintain healthy hair and skin, and prevent blockage-related issues like pimples. They contain chemicals that work against oil and dirt and may also have fragrances. Similar oil-absorbing technologies are used in environmental applications, like cleaning oil spills.
Step-by-step explanation:
Scalp cleansers remove oil accumulation from the scalp and are typically used after a scalp treatment. These cleansers help to maintain a healthy scalp by eliminating excess sebum, which is an oily substance secreted by the oil glands in the dermis. Sebum naturally conditions and waterproofs hair and skin, preventing them from drying out. However, excessive sebum can lead to blocked pores, resulting in pimples, especially common during teenage years when up to 85% of people experience acne.
Traditional hygiene products such as soap and shampoo include chemicals that break down the oil and dirt on your skin and hair. They're designed to cleanse effectively and may contain fragrances to leave a pleasant scent. Furthermore, innovations like PRP (petroleum remediation product) that use microencapsulation technology to trap oil illustrate a different application of oil absorbency, primarily used for environmental cleanups.
The goal of these scalp cleansing agents is to promote scalp health by managing the balance of natural oils and preventing issues associated with oiliness or cleanliness.