So Bomb DIY - バスボム 3個パック - マーメイド/ユニコーン/コットンキャンディ

The molds are a solid 2.4 inches, so the bombs come out pretty chunky, and the surprise figurine inside is the part my kids look forward to most. We made all three in one afternoon, and the mixing part kept them busy without making a huge mess.

My daughter had so much fun mixing the powder and pressing it into the molds—the surprise figurine inside was the best part. The bath bombs fizzled impressively in the tub and left no weird residue.

My niece squealed when she saw the mermaid and unicorn molds included in the kit. The bath bombs were surprisingly easy for her to mix and press, and she loved finding the little figurine surprise inside each one.