The ability of roses to contain pigments. There is an ancient saying that women dye their nails with roses. Therefore, it is normal for the color of roses to fade gradually after boiling. If soaked, it will turn white, which may be artificially colored. Generally, a small amount of pigment will be mixed in the water, and the flowers will turn pale from the original color. However, it is wrong if the fading is serious. After the rose is soaked in boiling water, the petals soaked in boiling water will fade and the color will be uneven. After soaking for several times, the petals outside will turn white. If the water is light yellow (or light green), it is normal. If the water is red, it is dyed.

You can test it, just soak it in cold water. If the color fading is serious, it means artificial coloring.