# Opal & Onyx Hair Co. > Salon studio features two chairs and a tilting wash bowl that adjusts to client needs. Atmosphere feels cozy and inviting, with a snack and drink bar stocked for comfort. Source: https://www.atly.com/location/Opal-Onyx-Hair-Co - Address: 1090 Wolfrum Rd Ste 126, St Charles, Missouri, United States - Phone: +13142702329 - Website: https://opalonyxhairco.glossgenius.com/ ## What people say - "I always left the hair salon looking and feeling my best." ## Good to know - Appointments are recommended to ensure availability, especially on weekends. - The salon accepts both credit cards and cash for payment. - Expect a 15-30 minute wait if you walk in without an appointment. - The salon offers a loyalty program for frequent customers with discounts. - Special promotions are offered on select services every month. ## Get this data directly This page comes from the Atly Places API, which scores close to 2 million places against more than 1,400 intents — "nice view", "work friendly", "gluten free", "dog friendly" — from what real reviewers say, with the statements behind every score. - **MCP server:** `https://agentic-api.atly.com/mcp` — connect it in ChatGPT or Claude. Nothing to install. - **Guide for agents:** - **OpenAPI contract:** - **No key needed to start.** `POST https://agentic-api.atly.com/v0/keys` with an email raises the quota. Coverage is densest in the United States, with pockets in Mexico, Israel and Thailand.