How can i keep my hair healthy ?? Any tips?

After dying my hair so many times i finally decided to just keep it natural. I haven't dyed it for 9 months and its looking great im just afraid that because i use the hair straitgner everyday it will damage my hair…please help…

If you want to get a glimpse of naturally long healthy hair take a look at my pics

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1- Nutrition is the key..healthy hair starts fron the inside..eat right..exercise..lay off the sugar
2- wash your hair often..African American-twice a week.
3- Always deep condition
4- Stay away from the harsh dyes..use a gentle rinse instead
5-Use heat styling products at a minimum
6- At night always wrap your hair in a silk scarf when you sleep- it protects the hair shaft and prevents breakage.