clip in hair extentions work for me. I don't mean the ones that are like a few strands to add coloured streaks, these are strips of hair with several clips that go right around your head under your natural hair, I ususually do 2 or 3 layers. You can get them ready made or buy a weave and sew the clips on yourself. I find this is a great way to change my hair without the expense of going to a hair salon. Then you just unclip them at the end of the night.Its also a good way to add different colour flashes to your hair.
Hope this helps
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