In collaboration with Presto, we have further simplified our already easy and quick application process with the Presto x Apres All-in-One Extend Gel. As the name implies, this bottle is all you need. No pH Bonder, no Non-Acidic primer needed! Everything is all included in this one bottle. Just use it as you would normal Extend Gel to create long lasting and beautiful Gel X extensions. In collaboration with Presto, we have further simplified our already easy and quick application process with the Presto x Apres All-in-One Extend Gel. As the name implies, this bottle is all you need. No pH Bonder, no Non-Acidic primer needed! Everything is all included in this one bottle. Just use it as you would normIn collaboration with Presto, we have further simplified our already easy and quick application process with the Presto x Apres All-in-One Extend Gel. As the name implies, this bottle is all you need. No pH Bonder, no Non-Acidic primer needed! Everything is all included in this one bottle. Just use it as you would norm