The scent of CK IN2U Heat was designed to boost attraction and draw the attention of everyone around you. The designers at Calvin Klein developed this men's cologne in 2009, along with a matching perfume for women. The top notes begin with bright ginger and mate tea, while the base notes of musk and vetiver provide a rich foundation. Pear and coriander keep this scent from being too heavy. This fragrance is light enough for daytime and casual use.