The Everyday Essentials - 5ct brush set by Real Techniques - VOID is highly recommended by Kathy in her video review. She describes the set as super complete, especially for face makeup application. The brushes are multi-faceted and ideal for blending foundation, cream products like bronzer, and concealer. Kathy advises moistening the sponge to prevent excessive product absorption and achieve a neat finish. She also highlights the smaller brush in the set, perfect for applying concealer and shadows. Overall, the Everyday Essentials - 5ct brush set offers versatility and convenience for a flawless makeup application. However, it's important to note that the review does not mention any potential drawbacks of the product.