Product of the Day: Kerastase Fibre Architecte Renovating Dual Serum
The Goods: This dual-action conditioner and split-end-mender was used at 3.1 Phillip Lim's structured show to infuse gloss and fight frizz into "windswept" updo's.
Why It Works:"Even though we started with straight hair, this product left strands silky enough to create the sleekest of looks," explains Kérastase hairstylist Odile Gilbert. "Plus it smells good."
Insider Tip: You'll have to wait until October to pick up one of these repairing creams, but the delay is worth it. Packed with ceramides and (good-for-you) keratin-mimicking ingredients, this blend has been scientifically proven to strengthen damaged locks.
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