Be prepared to book touch-ups about every 8 to 12 weeks. O'Sullivan says that those with longer hair might be able to go longer between touch-ups, while those with shorter hair will likely need a refresher at around three months. The three-month mark is also when Lecher finds herself "treating problem-solution texture or very soft waves and beachy texture."

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Hair has undergone a chemical process so it needs to be treated accordingly. Lecher prescribes a Joico regimen for her clients so their hair will stay healthy and they will be able to maintain their hairstyle at home. Your stylist will likely offer a similar guide.

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Perms can be an investment between the initial cost of the perm, additional salon appointments and your arsenal of hydrating products. The prices can vary greatly by area and from salon to salon.

Rizzo estimates that perms can range from $200 to $500 with touch-up prices varying from $150 to $300, depending on the original cost of service. Plus, the price will increase depending on the thickness and length of hair. It's helpful to think of the price of a perm being similar to specialty color.

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All good things don't last forever, especially perms. Over time, the texture will soften and loosen. Lecher says that there will be some variances based on the type of perm. Waves may slowly disappear from hair or the remainder might grow out.

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Permed hair can be treated like regular hair, but with caution. "I recommend anyone who has recently permed their hair, don't style it, unless it’s [just] washed and combed with a wide tooth comb or your fingers," Rizzo says. If people must use a hair tool, the experts suggest a diffuser. Straightening tools are best avoided because they cause more heat damage. Plus, Rizzo warns using them can make hair frizzier when it's worn curly again. 

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