Barbie Dreamtopia Rainbow Magic Mermaid Doll with Rainbow Hair

What you're getting

Get your little one in the bath with this Barbie Dreamtopia mermaid doll. Warm water shifts her hair and tail to soft pastels, cold water brings back the vibrant neon colours — and you can do it over and over again.

She's got an ocean-inspired bodice with pearl details, so there's plenty to look at while you're trying to get them to actually wash behind their ears. Doubles up as both a toy and a bath-time incentive, which, let's be honest, is half the battle.