Frizz is enemy number one for curly-haired ladies — it's annoying and pretty much unavoidable. But the best way to keep fuzziness to a minimum — even during the hottest days of the year — is to make sure your hair is healthy. Rely on Macadamia Professional's Deep Repair Mask ($36) to help this process. This insanely hydrating mask is made with ingredients like macadamia, argan, and tea tree oils that not only moisturize and protect your strands but also work to treat your scalp. After shampooing, pop this treatment on for seven to 10 minutes, rinse it off, and then style your mane as usual. Doing this mask at least once a week, especially during the Summer, will make your hair stronger, shiner, and, of course, healthier.