I prefer to keep my hair straight and short. I prefer to keep my hair straight and short.

Perming my hair takes too much time and, is too costly, and might damage my hair. Perming my hair takes too much time, is too costly, and might damage my hair.

Perming my hair takes too much time and costmoney and might damage my hair. Perming my hair takes too much time and money and might damage my hair.

You could also say "takes too much time and is too costly" which feels more polite. You could also say "Perming my hair would take too much time", since you mention later you have not permed your hair before.

Perming my hair takes too much time and, is costly, and mightay cause damage to my hair. Perming my hair takes too much time, is costly, and may cause damage to my hair.

Perming my hair takes too much time and costmoney, and might damage my hair. Perming my hair takes too much time and money, and might damage my hair.

I've never donetried perming my hair, let alone coloring it. I've never tried perming my hair, let alone coloring it.

I've never done perminged my hair, let alone coloringed it. I've never permed my hair, let alone colored it.

Could also say "I've never permed my hair before". People often talk about "dyeing" their hair when colouring it, so you could also say "let alone dyed it".

I've never done perminghad my hair permed, let alone coloringed it. I've never had my hair permed, let alone colored it.

I've never done perminged my hair before, let alone coloringed it. I've never permed my hair before, let alone colored it.

You can also say 'dyed' it or 'gotten it colored.' I think 'coloring' hair implies dying it another natural color, like brown or black.

I love it simple and natural! I love it simple and natural!

If you are referring to the previous sentence, it feels more natural to include "it" here (the "it" being your hair), but otherwise you don't need to include it.

Do you like your hair paermed or straight? Do you like your hair permed or straight?

Do you like your hair paermed or straight? Do you like your hair permed or straight?

Do you like your hair paermed or straight? Do you like your hair permed or straight?

Do you like your hair paermed or straight? Do you like your hair permed or straight?