Wash your hands thoroughly.
Gather your perfume items: refill, spout, bottle, spray
Pour a small amount of 90° alcohol into your empty bottle, screw on the spray, shake and spray to clean the spray and bottle thoroughly. Clean your spout with alcohol.
Empty the alcohol and allow to air-dry so that no alcohol residue remains.

Now shake the Refill, screw the spout onto the Refill. Turn it upside down onto the neck of your bottle. Hold while filling.
The pouring spout has an auto-stop system that stops pouring as soon as your bottle is full.

If you haven't used all your Skin fragrance, store it carefully in your Refill, closing it with its alcohol-treated aluminum cap.
Keep the refill and pourer in their black box until the next refill.