I use apple cider vinegar ($5) as a hair rinse every time I wash my hair. After I use shampoo, I take about a quarter cup of the vinegar and squeeze it through my wet hair. Then I immediately rinse it out, squeeze out any excess water, and apply conditioner. Using the conditioner afterwards helps mask the vinegar smell but still allows me to get the vinegar benefits. My hair is so soft and shiny after I rinse with vinegar that I never need to use any shine-adding products afterwards. It also brings out my natural highlights and helps tone down any brassiness from my not-so-natural blond ombré.
— Maria Mercedes Lara, associate entertainment editor