The Virtue Restorative Treatment Mask (£54) is another product I brought with me from the US because I didn't want to arrive in London with my hair looking like straw. The incredibly rich conditioner contains an ingredient called Alpha Keratin 60ku. Found in the entire Virtue line, the Alpha Keratin 60ku protein is supposed to be identical to the natural keratin in your hair, which the brand promises latches onto the damaged spots along your hair strands to fill them. What I can tell you is that my very dry, very highlighted ends feel like silk after slathering this on in the shower and leaving it for about five minutes — and my friends with curly hair and bleached blonde hair have said the same thing. I've only lived in London for three months and I'm already through the jar I brought — I use it that much.