The reviewer, Erica, tried the bye panda eyes! vol. def. masc. by .essence. and found it to be underwhelming. She mentioned that there was no noticeable difference between her lashes after using the product, except for them being slightly darker. Erica stated that the mascara did not perform any better than other options available. Overall, the review suggests that the bye panda eyes! vol. def. masc. by .essence. may not be worth purchasing as it does not deliver the desired results. However, it is important to note that this is just one person's opinion and others may have different experiences with the product.