What is another name for the double rod technique in permanent waving?

• A. Piggyback
• B. Twin-Rod
• C. Double-Rod
• D. Composite-Rod

Answer: (A)

In permanent waving, the double-rod approach uses two rods on the same strand to handle longer lengths and ensure an even curl. This method is called piggyback wrap because the second rod rides on top of the first, like a rider on a horse. The base rod anchors at the scalp, and the additional rod covers the remaining length, keeping the wrap secure and allowing the waving solution to process consistently along the entire strand. This helps prevent uneven curl or gaps that can happen with a single rod on long hair. While you may encounter other descriptors for two-rod wraps, piggyback is the standard, commonly used name.