* Salon de coiffure magnifique (Most literal translation)
* Boutique de coiffure magnifique (More emphasis on "boutique" than "salon")
* Salon de coiffure élégant (Elegant instead of "magnifique")
* Boutique capillaire magnifique (More specific, "capillaire" means hair)
* Salon de coiffure chic (Chic, stylish)
You could also combine these words to make your own unique phrase. For example:
* Salon de coiffure magnifique et élégant (Beautiful and elegant hair salon)
Remember to choose the phrase that best suits the tone and style you're going for.