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Growing-out a cropped cut, like Gwyneth? Be sure to stock-up on these must-have aids:

Daily: Pantene Pro-V Beautiful Lengths Shampoo & Conditioner
Specially designed with Aquacurrent Science, which directs the movement of moisture and provides strength against damage to help you grow your hair longer. ($6.15, Drugstore.com.)

Weekly: Kerastase Ciment Anti-Usure
Strengthens and protects damaged mid-lengths and ends. Helps provide instant detangling and lightweight conditioning. ($38, Kerastase-USA.com.)

Monthly: Rene Furterer Tonucia Toning and Densifying Mask
Strengthens and densifies fine and tired hair thanks to Cimentrio, an active ingredient, biomimetic of intercellular cement. Texturizing wheat microproteins coat hair without weighing it down. ($42, Beauty.com.)