How do I get straight hair to stay curly or wavy?

I have naturally straight hair and have been trying everything to get it to stay wavy or curly. I will finally get looking natural and nice beach waves but within an hour they fall flat. Is there anything I can do about this?How do I get straight hair to stay curly or wavy?
Hey I have very straight, thick hair so when I curl it it falls out pretty quick. I have found recently though that if I use John Frieda's Curl Reviver from the Frizz-Ease collection when my hair is damp the curl holds a lot longer and the hair looks natural. I also use Wella Firm Hold hair spray after I have created each curl and because sometimes hairspray can make hair look fake and sorta of hard I spray the curl, gently brush through it so it doesn't lose it's shape and then gently respray again. I went out a few weeks ago after doing this and my curls stayed perfect all night and looked really natural and everyone said I looked really nice in the pictures. Hope I helped =)



Also I usually use a straightener to curl my hair because I don't think curlers work as well on me. Also if you're wanting the beachy look divide your hair into 4 plaits, 2 either side of the head (with wet hair) and allow it to dry. Then go over the plaits with the straighteners and also hair spray each braid and leave to cool and this will make sure the hair stays wavy longer.How do I get straight hair to stay curly or wavy?
Are you using hairspray? Get hairspray that will hold curls.
Uhmm.. What i do is when i blow dry my hair after showering is I twist my hair around my two fingers and let it goo and keep doing that untill my hairs dry. I hope it works for you cause it did for me. now my hairs wavy. Remember to put on hairspray for it to stay in shape. Good luck