The ceiling stars will glow after you place them under lamplight or sunshine for a while. – The luminous 3D wall stickers, glow at night creates a calm and soft atmosphere. 【Upgraded Brightness and Longevity】- The new version of glowing stars has been upgraded, which features extra 30% higher brightness and longevity, designed to provide a comforting glow in the dark at night, just long enough to help you or your child fall into a peaceful sleep.