Scam merchants. Charged me twice. Told me it didn’t work the first time. Wouldn’t refun even with receipt and proof of statement. The woman at the counter made me wait while she called her daughter, then her husband, then she said her bank had only charged once. I went to my bank and they confirmed they’d charged me twice. I rang Crystal Nails and they refused to refund. Don’t trust these people. I’d give negative stars if I could