Swish. Rinse. Refresh.
Crafted from stainless steel and stamped with the Underbrush logo at the base, this compact cup is the perfect companion to Pearl Serum. Designed for daily use - just add a few drops of pearl serum, top with water, and you’re good for a refreshing swish.
4.8
152 ratings
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I like the cup, not to much to review on
DAYKOTAK · 3 days ago
I love this cup. It is perfect for my mouthwash. It stays clean and doesn't take up a lot of space on my counter. Plus I don't have to worry about it breaking if it gets dropped
L
Leslie · July 12, 2026
Solid but bigger than it needs to be. I have been having a hard time getting the right amount with the mouthwash because the lines are so far spaced. Once I find the sweet spot it will be great but I was hoping for something right out of the gate that knocked it out of the park.