If you happen to keep so many hair care and styling products on the shelves inside your shower cabin, then it’s necessary and helpful to categorize and arrange them in a way you can easily spot the oldest ones and more-in-need to be consumed the soonest possible. Place them from top to bottom in some kind of chronological order based on the date you got them or opened their package.
You can even tag them with their special date, so as to have access to this sort of info effortlessly and efficiently. It would be also convenient if you added a few extra criteria of placement such as type of product (all the shampoos close to each other) or brand (same-line products together). Try to read through your desires and put this knowledge into practice on an everyday basis. As you can see my favorites are Redken, L’Oreal Professionnel, Wella Professionals, Kerastase, Molton Brown, Matrix and Pureology. Buying professional products you secure higher quality as well as your hairstylist guidance on their use.