We use the finest professional powders and liquids by Creative Nail Design and OPI. These are safe products no MMA, they are also considered "smart" products, they are designed to break away from the natural nail with sufficient force as not to damage the natural nail, unlike older acrylic products or non professional lines. Acrylic Fill in is for a two week period. Three week and longer fill in subject to additional charges, per client basis. Charge per repair as needed. additional weeks 3 week add $10 4 week Add $20