Another user had said that she used diana stalder glutathione soap on her lips to lighten them. She said it lightened at the middle first. I used it a couple time and it lightened only in the middle and I don't want to continue doing it until I know for sure the ends will lighten too. I was wondering if anyone else tried this. Is this temporary? Will it go away once the skin replaces itself?

I never knew of anybody who lightened their lips. Interesting. I'm not too familiar with these things but I did find this post referring to the subject of using Diana Stalder soap. https://www.askmehelpdesk.com/skin-lightening/proven-way-lighten-your-lips-386719-3.html

I think the post you refer to, hanna, is an advertisement that slipped through the cracks. We do not promote products here.

Any skin lightening formula used is not permanent.