If you're a girl with super fine and thin hair like me, you get a sucker punch to your self confidence every time you see a girl with a gorgeous mane of hair...it hurts! Hair extensions can solve those woes. There are so many brands to choose from nowadays - all with different prices. Go with remy hair (human hair) - which allows you to treat it like normal hair (washing, curling, styling). And as far as clip-in vs. permanent? It all depends on how much time you're willing to devote to your 'do. Personally, I can't stand the thought of waking up every morning and clipping hair in, so mine are sewn in (which will last about 5 months with regular tightening). But if you can handle the daily in and out - clip ins are usually a bit cheaper. WELL WORTH IT!