Summarize the following:
If your natural hair is textured, curly, or wavy, don't straighten it. Embrace your natural lift and make it work for you. Just avoid letting your hair grow out too far horizontally. These products are especially important for fine hair. Volumizing shampoo minimizes the amount of residue left on hair that could weigh it down. Mousse is a styling product that directly gives lift at the roots. Massage mousse into clean, wet hair near the scalp. Blow-dry your moussed hair while pulling a round brush through it to optimize your hair's volume. or perm your hair. If your hair is naturally straight, or you just want to add more texture, there are many ways of temporarily curling your hair. Curling can be done relatively easy at home with a curling iron or rollers. A "permanent wave" adds wavy texture or curls to even the straightest hair through chemical processing and heat. Perms are fairly difficult to do at home and are best left to professional stylists if you are inexperienced. Tilt your face forward and drape your hair in front of you. Drying in this position will lift your roots from your scalp, giving more volume. If you have bangs, dry them right-side up before you start. Your bangs are likely much shorter than the rest of your hair and won't have the same weight. If you dry them upside down, they may stick up too much. Finger waves are a subtle, easy way to add volume and texture to short hair. Damp hair is bunched together in multiple hair clamps and allowed to dry to form the "waves." Variations use curlers at the hair's tips and mousse for hold and added volume.

Summary:
Stop straightening your hair. Use volumizing shampoo and mousse. Curl Blow-dry your hair upside down. Incorporate finger waves into your style.