Oscar-winner Julia Roberts loves the way hairdresser SERGE NORMANT does her hair so much, she refuses to wash it for at least two weeks after he styles it. The CLOSER star desperately tries to preserve her special hair styles and says the secret is to not shampoo until the last second. She explains, "One of the tricks I've learned over the years is that I can milk a great style to the last possible second. "Honestly, after he does my hair, I won't do anything to it for - wait for it - two weeks. "My hair doesn't get greasy very fast, so I can go a good ten days without washing it."