What type of light do they need for charging?
Any strong light source can be used to charge them quickly, with sunlight and UV light being the most effective options.
Charging Glow Stickers with Light
To activate the glow, simply expose your stickers to sunlight or a strong artificial light source. UV light provides the quickest and strongest charge, but even indoor lights will work. Just a few minutes of exposure will make them glow beautifully.
