Kérastase Elixir Ultime Oil Serum If you're looking for ultimate shine, this Kérastase Elixir Ultime Oil Serum ($24-$50) bundles up four different oils — maize, procaxi, argan, and camellia — to leave you with smooth, glossy hair. It's earned a 93 percent recommendation rating from other Sephora shoppers for this very result already. Image Source: sephora.com Kérastase Elixir Ultime Oil Serum $24 from sephora.com Buy Now