Which condition is characterized by solidified impaction of oil without a cell center?

The condition characterized by solidified impaction of oil without a cell center is known as sebaceous filaments. These filaments are formed by a mixture of sebum and dead skin cells that gather within the lining of the hair follicles. Unlike whiteheads, which contain a cell center and are more likely to be inflamed or infected, sebaceous filaments are typically non-inflammatory and serve as a natural component of the skin's oil production process.

Understanding sebaceous filaments is important for estheticians, as they often appear on oily skin types, especially in areas like the T-zone (forehead, nose, and chin). They play a role in the skin's function by aiding in the transport of sebum to the skin surface, helping to maintain hydration and protect against environmental damage. This distinction is crucial for recommending appropriate skin care treatments and products to clients.