Improves the durability of the manicure on the most problematic nails. It is acid-free and therefore does not sting when applied to natural nails.

It should be applied only on the natural nail without touching the cuticles or the skin. Suitable for difficult nails. Air dry in 30/60 seconds.

You can use just Primer SOS or just Bond Promoter. If you prefer, you can use both products keeping in mind that SOS Primer is always used before Bond Promoter.