What is the least harmful and cheapest type of hair extension.?

I want my hair to be long and to have it slightly curly on the bottom. And to make it long - I think I would need hair extension, because my hair won't grow after a certain length. But what is the cheapest and least harmful method?





Which method would you reccomend?What is the least harmful and cheapest type of hair extension.?
I would recommend clip in golden queen extensions. They're 100% human hair so you can style them any way you want and also dye them if you ever decide to change your hair colour.

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