Red hair can sometimes look dry and dull, especially on the ends. If you need a quick shine, try John Freda luminous clear hair gloss. A lot of reviews I read said that it’s drying, and I don’t disagree. I tried it for 20 minutes on dry hair (or you can use it after conditioner three times a week). The first day my hair was dry, and I needed to use a hair mask and lots of leave in conditioner. Day two my hair was back to normal and had a great sheen to it. It only lasts one week, and I estimate I can get about two more weeks worth out of the bottle (I have long hair). You can also go to a salon and get a clear glaze that will run $30-40$ so I’m not sure it’s worth it, but it’s a quick solution.