What It Does:
Coats each strand with detanglers and moisturizers, making hair more resistant to humidity and easier to straighten with products and a blow-dryer. Deposits reflective particles to increase shine. "We also load these formulas with fatty alcohols," says Dianna Kenneally, senior scientist at Physique, "so they detangle as you rinse."
What It Doesn't Do:
Actually straighten hair. "Only heat-styling does that," Kenneally says.
What to Look For:
Shine-enhancing dimethicone for luminous results, and humidity-resistant smoothers like cetyl and stearyl alcohols for frizz prevention.
Do you have questions about skincare, makeup or aging beautifully? Don't worry—Valerie Monroe has the answers. Now, she gives you the straight (or wavy, or curly) story on how to keep your hair looking its best.
Declutter your life! Our March issue features a complete guide to streamlining your life, from Peter Walsh's 30-Day Organization Challenge to innovative ways to clear your mind. Plus, go behind the scenes of Oprah's yard sale and find out how you can improve the world with a simple "hello."