I'm so emotional over the Franklin Expedition daguerreotypes at auction that I don't know if I can even make fun of their 1840s hairstyles, which are more visible than ever in the high resolution images (which are better than anything SPRI ever released, as Logan Zachary pointed out).
But. Edward Couch and macassar oil and/or bear's grease or whatever product he has lmao.
I have seen this in many other mid-19th century daguerreotypes: so much styling product his hair gleams and is literally sculpted into shape. (I have also previously written about Dr. Stanley's 1840s juvenile delinquent hairstyle). Along with the low inseam and footstrap on trousers, it seems to be one of those things that rarely makes it into historical costume dramas.
The Franklin daguerreotype images are also high resolution enough that you get a better view of their wonderful black stocks tied with bows. It's an easy look but the bow gives it a certain elegance—Fitzjames and Goodsir have particularly good examples of stocks. As I understand it almost any black stock was acceptable per Royal Navy regs for a long time, allowing the 19th century officer a certain degree of fashion expression changing with the times.
I love Frederick William Beechey's portrait circa 1822 in pattern 1812 uniform (NMM):
Another great polar look! (Yes Beechey like Beechey Island, which he named after his father).