CND™ Strengthener RXx, Nail Strengthener for Tougher, Stronger Nails & Protection for Thin Nails, 0.5 Fl Oz, 0.5 fl oz is up for auction in Beauty & Personal Care. The current bid is $4.00, 82% below the $22.00 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.