After Silicone Perma Lip Augmentation to Enhance the Lips. This is a 20 something female professional from Canada who always felt that her lips were too small. She had been using fillers for years and was sick of doing this every 3-6 months because they didn't last very long. 5mm diameter silicone implants were used in the upper and lower lips. The length is based on the length of your lips.