Detailed answer

Blackheads can be a sign of dehydration due to the skin's increased production of sebum to compensate for the lack of moisture. When the skin is dehydrated, it can become dry and flaky, leading to clogged pores and the formation of blackheads. Additionally, dehydration can affect the skin's natural moisture barrier, causing it to be more prone to congestion and buildup. Therefore, maintaining proper hydration levels is important to prevent the formation of blackheads and maintain overall skin health.