Probably some of you already know this, but I found out it some time ago, and I want to share with you guys...
A the store I bought Bar Keeper Friend, it cost less than $3. I followed the instructions on the can, they say to wet the surface before use it.
The front headlight before BKF.
After using Bar Keeper Friend.
It has still some spot, I will re do the process soon, but it is way much better that was before, as you can see.
A the store I bought Bar Keeper Friend, it cost less than $3. I followed the instructions on the can, they say to wet the surface before use it.
The front headlight before BKF.

After using Bar Keeper Friend.

It has still some spot, I will re do the process soon, but it is way much better that was before, as you can see.