What type of skin might experience excessive oiliness as a factor affecting skin penetration?

Excessive oiliness is a characteristic associated with oily skin. This skin type produces an overabundance of sebum, which can lead to a shiny appearance and the potential for clogged pores. The presence of excess oil can also impact how well products penetrate the skin.

Oily skin can create a barrier that can prevent certain active ingredients in skincare products from effectively absorbing into the skin. Meanwhile, the other skin types, such as normal, dry, and combination skin, have different sebum levels that allow for more balanced penetration of products. Therefore, oily skin is distinctly affected by its excess oiliness, which can hinder the efficacy of topical treatments.