u/Equivalent_Big208

Hello,
I recently bought the K18 molecular hair mask from COSMOPROF. The first time I used it I shampooed my hair, no conditioner, and applied it after I towel dried my hair. I didn’t rinse it out and the next day I kept noticing my hair smelt like rubber, or this off putting chemical smell?
It was so bad that I decided to wash my hair again the next night and this time I shampooed, towel dried, applied the leave in and let it sit for the four minutes. I then applied conditioner and rinsed it thinking that by rinsing it my hair wouldn’t have that smell. The next day I can still smell it. I know it’s not my shampoo since I used a different one the second wash.
Has anyone else experienced this? I just keep getting wiffs of it and I hate it.