wear in the sun during the day and change into glow in the dark in the night.
This product works by charging off the suns rays (uv light, daylight, lamp light etc.) if your product does not automatically glow place under light for a few minutes giving it time to charge.
please note the pink is a lighter batch at the moment
The chunky may have a time limit to the length it glows in the dark with this being a new product, shedding of the green sequins can cause glow to fade as this is where your glow comes from, more details on this will come from customer feedback but your day time colours will always remain :)