That's becoming a really popular trend in the japanese community, if not asian-american community here in SoCal. I guess they call it "hair straightening" or "thermal hair straightening".
If you have access to local japanese papers like: LA Auto Guide, Bridge, Lighthouse, Sushi & Tofu, etc. they often have ads for such services.
Here's a few of names/info.
Hair Epoch: 310-391-1568 Los Angeles
Tokyo Salon: 213-680-0366 Los Angeles
Salon de NOVO: 626-795-7822 Beverly Hills
Van-Van Hair Salon: 310-473-1464 w. Los Angeles, 310-375-6500 Torrance
Taka Hair Salon: 310-575-6819 Los Angeles (Sawtelle area)
Jun Hair Salon: 310-538-9928 Gardena
Good luck. I've never been to any of those places, but they all had ads or articles about it.
