DIY Color Booster for Brunettes Cocoa makes for a deeper, richer brown. How it works: Honey moisturizes while acids in the yogurt (lactic) and vinegar (acetic) penetrate the hair shaft, allowing the cocoa's pigment to sink in. Natural acids open the cellular doors to the pigmented molecules and make the results more pronounced.
Ever wonder if you're using too much shampoo or not enough night cream? Here's your ultimate guide to beauty serving sizes.