The I'm Prep! Balm in the shade Corner by I'M MEME is highly praised by reviewer Katlyn. She demonstrates how beautifully it blends and mentions that a little goes a long way. While the product is not overly pigmented, it is still buildable and easy to blend. The only downside mentioned is that it needs to be applied with fingers, although it could potentially be used with a brush. Overall, Katlyn rates the product a 9.5 out of 10, highlighting its affordability and effectiveness. The I'm Prep! Balm in Corner color is a versatile and high-performing cosmetic option for those looking for a natural and blendable finish.