(A brief non-political post.) Yesterday, I discovered the drawback of head shaving: The sun turns you into Lobster Man. Seriously, my whole head was a red popsickle.
Fate beckons me out of doors again this morning, stores are not open yet, and there is no sunscreen in the house. What to do? Fire up Google and research DIY solutions. Turns out that the most effective sunblocker is Zinc Oxide and/or Titanium Dioxide mixed with oil. That's white oil paint! A well-made oil paint is just pigment mixed with linseed or safflower oil -- usually safflower in the case of whites.
Since museum conservators now think that Zinc white (long prized by artists for its transparency)can cause long-term problems in paintings, my tube of the stuff now has a useful purpose. And it's easily transportable.