How can i get body in my straight hair without getting a perm or a cut it is shoulder length all one

shampoo and put medium - large sized rollers in your hair whilst damp and remember to use a good setting lotion and then leave your hair to air dry or sit under under a hooded dryer, you could even try sleeping in them if you are brave above, when hair is dry remove rollers and brush through. Instant body and waves

How can i get body in my straight hair without getting a perm or a cut it is shoulder length all one length?

The first thing I would suggest doing is getting a shampoo and conditioner that puts body in your hair. Then blow dry your hair upside down and use hot rollers.