It is an interference phenomenon of light. When light passes through the film of soap bubbles, the top and bottom of the film will reflect. The soap film can contain about 150 different layers at most. The messy color combination we see is caused by the unbalanced film layer. The thickest film layer reflects red light, the thinnest reflects purple light, and the middle reflects seven-color light.

Bubble Stick Toys Product Description

Item Number	QS220523576
Function	Bubble Water Stick
Package	Display Box
Package Size	15.77.326.5CM
Carton Size	89.550.557CM
Quantity/Carton	96PCS
Measurement	0.258CBM
G.W./N.W.	22.5/20.5KGS
MOQ	96PCS