Straight talk
• CELEB ICONS Reese Witherspoon, Demi Moore, Rachel Bilson.
• BEST FOR Any hair type - although if you've got very curly hair, you'll need to spend extra time straightening it.
• GET THE LOOK Shampoo and condition with products specifically designed to smooth the hair cuticle, says Justin German, consulting hairstylist for Pantene. Blow-dry the hair straight using a round brush; when it's almost dry, separate it into sections and roll it into jumbo-sized Velcro rollers. "This will give you a lot of volume and height," says German. Leave the rollers in for about 20 minutes, then brush it out and apply two drops of a silicone-based shine serum. "If you think you need it, use a flatiron on the ends."
• DO… Blow-dry your hair in one direction - it will smooth the cuticle and prevent fly-aways.
• DON'T… Use a flatiron from root to tip-your hair will lose body.

Splurge products:
Kerastase Ciment Anti-Usure Reinforcing Treatment for Damagaed Lengths and Ends ($40)
Kiehl's Stylist Series Silk Groom Serum ($22 for 75mL)

Save products:
Pantene Pro-V Extra Straight Shampoo ($6.49)
Goody So Finished Self Hold Rollers ($4 for four)
Herbal Essences Long Term Relationship Leave-In Split End Protector for Long Hair ($4)

Images courtesy of WireImage.com (celebrity) and Geoffrey Ross (products)