I was jumping rope outside on day 2-3 after my application. It didn't smell worse but the smell was more pronounced. The largest percentage of body heat is released through your head (I think) and once I started sweating I thought I would faint. Every car that drove by with their window down made me self-conscious. I wasn't sure if it was all in my head but the fumes made my head start hurting, literally. I couldn't STAND the way I smelled. I will never do that again. I, personally, can only bear the smell on freshly-washed hair, nothing more, nothing less. No additional applications and no sweating!