What is the effect of using steam before extraction?

Using steam before extraction has a significant effect on the skin, specifically in the context of preparing for the removal of blackheads and other comedones. When steam is applied, it heats the skin and opens up the pores, which helps to soften the surface layer and the contents within the pores. This process makes it easier to extract blockages such as blackheads, as the softened comedones are less resistant to gentle pressure during the extraction.

In contrast to the other options, which suggest either tightening the skin, increasing inflammation, or enhancing moisturizer efficacy, the primary role of steam in this scenario is to facilitate the extraction process. The softening action provided by steam will aid in minimizing discomfort and trauma to the skin during extraction, leading to a more effective and comfortable treatment. Hence, utilizing steam in preparation for extractions directly correlates with easing the removal of impurities, making option B the correct choice.