Shampoo/Spray that makes my hair not frizzy, and less humid.?

well, everytime i step foot outside my hair gets frizzy, and [i straighten my hair] and all of a sudden it flips back out and looses its straightness. and its really annoying. anyone know shampoo or spray that will stop it from getting humid %26amp; frizzy??Shampoo/Spray that makes my hair not frizzy, and less humid.?
sunsilk frizz free is amazing.

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