This product was introduced about 20 years ago and uses steam technology (rather than just heat) to curl hair. The older sets require salt in the water-steaming unit. There are many varieties of these sets - a travel size, salon pro, and ionic versions. These are good sellers on eBay. I have found them at thrift stores for around $4-$5. I was lucky enough to find complete sets in the boxes. Used, but still in working condition. The retail price of the Richard Caruso Molecular Steam setter ranges from $24.99 to $37.99, depending on the size of the set. (Click here to see the retail prices.) These sets sell for between $25 and $30 on eBay.
Here are a few completed listings to check out. These are all for used sets that could be found at garage sales and thrift stores.
RICHARD CARUSO HAIR STEAM 28 CURLERS SET NEEDS SALT
Richard Caruso Molecular Steam 30 Rollers Requires Salt
RICHARD CARUSO MOLECULAR HAIR STEAM CURLERS ROLLERS HOT
Click here to see all completed listing for Richard Caruso Steam Rollers
Remington Tight Curls
Clairol Benders Hair Curlers
Vintage Electric Rollers