The Product: Kiehl's Since 1851 Olive Fruit Oil Deeply Repairative Hair Pak ($25)
The Rating: 4.8 stars
Why Customers Love It: Damaged, dry hair is all too common, especially if you're bleaching. One reviewer raved about how it gave her hair the moisture it needed: "I have dry, damaged hair due to bleaching and this completely changed my hair with just one use. Cant wait to see the long term affect it will have. It even feels like my hair has more volume."