The Business of Hair Color: Don't Forget to RetailColor Tip: Chemical clients are natural retail buyers, points out Keune's Chris Sulimay, and the service should include a retail conversation. “That client is in your chair for 45 minutes or more, and while they have color on their hair, they aren’t going anywhere. It’s the time when they’re most receptive to a retail conversation,” he says. “When you check the foils and tell her it’s 10 minutes more, it’s a great stress you want her to be careful about anything she is putting on her hair, which leads to what you do recommend she uses.”