What skin characteristic makes block foundation more desirable?

Block foundation is particularly valued for its ability to cover imperfections. This characteristic is important in makeup application as it allows for a more uniform complexion by effectively concealing blemishes, redness, dark circles, and other skin irregularities. Block foundations typically have a thicker consistency, which can provide better opacity and coverage compared to other types of foundations. This quality is crucial for individuals looking to achieve a flawless skin appearance, making it a preferred choice for those with uneven skin tones or skin conditions that require additional coverage.

While other characteristics like a smooth texture, slight sheen, or weightless feel may enhance the overall experience of using a foundation, they do not specifically address the needs that many users have for coverage. Therefore, the ability to cover imperfections stands out as the primary reason why block foundation is often sought after in makeup practices.