Tonight at 10 p.m. in Wrinkle Free Friday: Brazilian or keratin-type straightening treatments are one of the hottest ways people are using to get shiny, silky, straight hair.

While some people swear by it, others raise questions about its safety and the cost.

It runs between $150 and $600 per treatment, so is it really worth the money and the potential risk?

Meg Farris talks to people on both sides of the story, in tonight's Wrinkle Free Friday at 10 p.m. on Channel 4.

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