Long Layers
Hollywood celebrities like Jessica Simpson and Demi Moore demonstrate the best haircut to mask hair extensions--long and layered. Ask your hairstylist to blend your extensions by creating medium-to-long layers in your hair and use thinning shears or a razor to remove bulk and blunt edges.
Curling And Waving
Even with a precision haircut, if your hair is fine or very curly, it can be difficult to blend your extensions. By adding waves or curls to your natural hair and extensions, it will effectively hide any short pieces or blunt edges and produce a cohesive look.
Bottom Line
Finding the best haircut to blend extensions is down to your individual hair type and length--what works for one person may not work for another. Consult a hairstylist who specializes in extensions to analyze your current hairstyle and suggest the best cut for you.