Nailberry Strengthen & Breathe Nail Strengthening Base Coat 15mlA double action base coat and treatment that strengthens the nails and acts as a breathable base coat. Strengthen & Breathe contains a powerful strengthening agent with amazing results: 90% agreed to improved nail condition, 90% found less nail breakages. The strengthening agent with the oxygen technology delivers an amazing smoothing and breathable base coat which hardens and strengthens nails and improves the wear of your favourite colour.