One way to fight diversion is to design and retail your own salon products. I saw this coming down the track many years ago and designed my own salon brand. This will take a great deal of salon testing and is a bit more costly but well worth the expense. Most of the large salon brands you retail now started this way.
Another way is to order Private Label products with your salon name. Many private label salon products are every bit as effective as large well known salon brands and some are even better. Many specialty styling products (pomades, wax, shine drops and the like) are more affordable through a private label company and can be sold at a lower or higher price point with your salon name. Private label companies will use your salon logo or help you design one. There are many high quality private label company that would be happy to help you through the process. For example, Aware and Liquid Tec are two well know companies here in California. And best of all no one will ever see your "exclusive salon brand" in any retail outlet or salon around the corner from you ever... at any price!
Another option is to retail high quality salon products from small boutique companies. I've been selling my Hair Research Salon Products direct to salon across America for 30 years with an exclusive distribution program. No two salons with 50 miles can carry them. Now that’s protection you won't get from many well know established salon brands.
Many popular salon only brands are doing their best to stop diversion. One salon only brand that has been spend time and a great deal of expense to stop diversion for many years is Paul Mitchell . For the last two and a half years PM as lowered it's diversion by 50%. And they did it the hard way. Every PM employee in the field, and there are a lot, is required to purchase (each month) $500.00 worth of products they find in any retail outlet. All PM products are decoded (something they have done for years) making it easy to find the “distributor who received them originally”. Those Distributors are then required to pay $150.00 for each bottle found with their code. This has made the PM salon only products unavailable in many of the leading retailers as they will not buy products that aren't available on a regular basis. Unfortunately far too many popular salon only brands are simply turning a blind eye. If you must use and retail a highly advertised salon brand go for those that work for you..