halo; angel ring
Refers to the ring of light depicted above an angel's head in Western art, or a similar luminous circle.
The angel in the painting wears a golden halo.
hair glow; shiny hair ring
Describes the glossy, reflective ring that appears on freshly washed or treated hair, often in beauty contexts.
After the treatment, my hair had a beautiful shiny ring.
Compound of 天使 (angel) + の (possessive particle) + 輪 (ring). The hair-glow sense is a metaphorical extension based on the visual similarity to an angel's halo.