The Amika Nourishing Hair Mask (£20) has saved my dry, sad-looking ends, which I just made drier and sadder thanks to a recent salon appointment. Leaving it for on for just five minutes (if you have fine hair, you may need to leave it on longer the thicker or coarser your texture) makes hair instantly softer. Then there's the scent, which is incredibly sexy, yet subtle enough that it won't interfere with your perfume. — SP