There are a few small items that make life just a bit better. Just because your out in the boonies doesn't necessarily mean a person has to be a total savage. We have learned a little bit over the millenia.
For instance, I never saw the point in being a total grunge when keeping basically clean was so simple. To this end I always have in my pack a towel, a washcloth, a collapseable wash basin, soap, toothpowder (or toothpaste) and a toothbrush.
You can make toothpowder out of 3/4 baking powder and 1/4 salt. The pioneers would used crushed charcoal. For soap, I use something scentless like Ivory and it's in a travel style soap container.
A bit of shampoo is also in order, especially for a prolonged stay. But your bar soap will do if need be. Your head hair is a natural place for nasties to take up residence. In a prolonged stay in the boonies, I'll just give myself a military buzz cut or shave my head. Easier to maintain. If you get lice, you can make a paste out of some types of plants, the SW Indians used mesquite beans, and make a mud pack on your head. It kills the lice. When you comb it out and then rinse, the dead lice will come out with it. Mesquite beans will also dye your hair black.
My wash basin is homemade but you can buy one or get a hiker's collapsable dog bowl. They weigh almost nothing and collapse flat. I'll pour in about 1/2 of the water I intent to use cold, and then I'll heat up water in my cookpot to boiling and pour that in. Then it's bath time.
I prefer not to wash my body directly out of my cooking pot if I can avoid it.
It's surprising just how much healthier you stay and better you feel out in the field when you just get clean regularly.