More stupid hair questions...help please =)?

1. on tv once or twice i saw this steam hair straightener...do you think it really works? i think it was a conair and i ve never had a conair before. also someone was telling me about one that had plates on both sides so you could curl with it to but ive never seen one...any thoughts on that lol



2. how long should you wait between colorings before coloring again? and how many colorings can your hair handle?

3. and the new box hair color stuff says it can be used once a month...is it really that good for your hair considering its a dye? and since its once a month safe does it last long?



idk these are my questions lol im a little lost...any knowledge helps lol



thankyou =)More stupid hair questions...help please =)?
conair usauly sux