please leave us message about any two colors of the temperature gel polish number# such as 1，2，3，4，... 11，12， then we will send the temperature gel polish as your message. if you don't leave us message， we will send you random color， all the colors are listed in above pictures.Use of CANNI 15ml colour changing uv gel:1)wash hands， wipe nail and remove cuticle2)brush Brush a thin layer CANNI base coat， curing 1-2 min by 36w UV/LED lamp3)Brush a thin layer CANNI color， curing 2 min4)Brush one more layer color， curing 2 min5)Brush a layer CANNI top coat， curing 3 min6)Wipe nail surface with cleanser to get perfect shining Soak off CANNI 15ml colour changing uv gel:Step 1: Soak cotton pad with liquid remover.Step 2: Warp the finger.Step 3: Wait for 2~5min.Step 4: Gently file away. Attention for CANNI 15ml colour changing uv gel1. Keep away from children2. Keep away from sunshine and heat3. Keep tight after use4. Follow directions for use5. Discontinue use if sensitization occurs6. It's normal phenomenon if the gel goes thicker in the case of temp.