Blowology Dry Bar & Spa, located in San Francisco's iconic Union Square, is a trendy spot known for its top notch Signature Blowout, which includes a shampoo, blowdry, and styling with hot tools, along with a complimentary touch-up valid for up to four days. Now if that isn't a treat, we don't know what is. The salon boasts a chic, elegant, and vintage vibe with unbeatable breathtaking city views, yet maintaining a relaxing setting with a luxurious setting.