The phrase "proper dilution" means mixing a liquid substance with another liquid or solvent in the right amount to make it less concentrated or strong. Full definition
Because hydrogen peroxide is caustic and can cause burning to sensitive tissues of the throat, mouth, and esophagus, it is important to get proper dilution instructions from your veterinarian or to proceed directly to your clinic for appropriate and safe treatment. (petfriendlyhouse.com)
A 2016 study on mice showed lavender is an effective proponent of hair growth and significantly increased the number and health of hair follicles when applied in proper dilution daily for a period of 4 weeks. (wellnessmama.com)
Do a Google search to find proper dilution ratios.) (happywithbaby.com)