Imen Top Coat No Blue for black: a no-wipe top that does not give black or neon shades a blue cast. Fluid consistency that holds a bead like Thick Top. On regular polish, apply Imen Coat and let dry. With gel polish, shape and buff nails, degrease and optionally use primer for adhesion. Apply dark pigment and finish with top coat. The source instructions say not to remove the sticky layer immediately to avoid damaging the manicure; allow to dry, check and remove gently. Training with certification is available; learn more.