Karina's video review of the I love extreme vol. mascara by essence highlights its impressive qualities. She praises the thickness of the brush and the intense black color, which adds depth and definition to her lashes. After applying the mascara, Karina is pleased with the results, stating that it is worth every penny. The mascara provides a noticeable difference, enhancing the appearance of her eyes. However, the review does not mention any potential drawbacks or limitations of the product. Overall, based on Karina's positive experience, the I love extreme vol. mascara by essence seems to be a reliable and effective cosmetic option for achieving voluminous lashes.