Are you losing the battle against Baltimore’s notorious summer heat and humidity? Has every day since May been a bad hair day? Mount Washington’s Kobi Salon comes to the rescue with Lasio’s Keratin Tropic, a straightening treatment that’s free of formaldehyde and its derivatives. “The express treatment, which lasts two to three months, is perfect for special occasions or for customers who are hesitant to try stronger keratin treatments that contain formaldehyde,” says Lisa Pozderac, co-owner of Kobi Salon. Prices start at $150. 6322 Falls Road #B, 410-828-7800, http://www.kobisalon.com.