I had purchased a Groupon for a keratin treatment and was serviced by Jonathan. I was not pleased with the Keratin straightening because the final result looked exactly the same as if I had straightened my hair at home. Perhaps he did not treat my hair with keratin for as long as it is needed ( I was under the hood for only 15 minutes with the treatment on ) or maybe the keratin solution wasn't concentrated enough. Nonetheless, I would not recommend Jonathan to anyone. I expect a hair care professional to be more educated and knowledgable about his customer's request.