Looks like the Wella Professionals family of salon brands—including Clairol, Sebastian Professional and Nioxin—will soon have a new home. Wella’s former parent company—P&G—announces the signing of a definitive agreement to merge 43 of its beauty brands with Coty Inc. According to an official P&G statement, P&G has accepted Coty’s offer of $12.5 billion to merge the 43 P&G beauty brands with Coty. The transaction will take the form of a Reverse Morris Trust, and in addition to P&G’s global salon professional hair care and color, will include the retail hair color, cosmetics and…