It might – but we have a variety of techniques to prevent that. While lace fronts ARE very thin and delicate, they are far more opaque than they appear. In some instances, darker hair under a lighter hairline can actually enhance the appearance of the wig by adding a subtle shadow to the hairline. If there is a significant contrast between the client’s hair and the wig hair, we can put a lightweight silk layer (called a “blender”), dyed to match the client’s skin tone, under the foundation of the wig to help their darker hair disappear. For REALLY high-contrast situations, such as a black haired Santa, a blender might be used in combination with a light application of temporary “hair white” to help lighten up the client’s hair under the wig.