1. Need to remove the sealing wax from the new brush before use, or will be "stiff" , please press the brush repeatedly just to soften the bristles. 2. Better use professional cleaning essence to clean residual color and nourish / moisturize the brush( to reduce brush streaks): Pour some essence into a cup or nail art palette, then press the brush on the front and back to force out the residual color in the brush. 3. Keep the brush up at the base of your cuticle and press down gently to fan the bristles out and swipe downwards. 4. Solid gel polish may solidify when illuminated by LED lights, sunlight and manicure lamps, so PLS keep the Whole Palette away from light sources and close the lid in time after each use.