The Perfecting Blender Duo by EcoTools is a highly recommended cosmetic product, according to Beth's video review. She praises its durability, unlike her old flaky blender. Beth mentions that the blender is easy to wash and doesn't peel away like her previous one. She describes the blender as feeling like a stuffed animal and being super absorbent. Overall, Beth loves the product and finds it to be of high quality. However, she does not mention any potential drawbacks or negative aspects of the product.