Tressa Ice Whip Reduce yellow tones in your blonde or grey hair with the Tressa Watercolors Ice Whip. This is no ordinary foam, it applies like a mousse but doesn’t act like one. This mousse acts more like a leave-in conditioner leaving fine hair textures feeling thicker, while coarse hair feels softer. Also boosting hairs natural shine and adding light control all while delivering a mega-dose of icy cool pigments.