Strengthening & Extending: Brush On Gaoy Self-Leveling Builder Gel, Create Natural, Strong Nails That Are Less Likely To Lift Easily. | Gel Base Coat Required: Builder Gel Needs To Be Apply After Base Coat, Otherwise It Will Peel Off Very Quickly. | Gel Top Coat Required: Builder Gel Will Remain Sticky After Curing. Seal The Builder Gel With A Top Coat To Prevent Stickiness. | Cure Required: Cure Under Uv Lamp For 60S. Cure Longer If You Apply A Thick Layer Or Use A Low-Wattage Uv Lamp. | Bigger Volume: 2 Pcs 16Ml Large Bottles With Brushed-Stainless-Steel-Look Chrome Silver Design.