If these paintings are valuable to you, don't even try to repair them ! Older paintings may be painted with paint that modern materials will mar or disfigure. I'd advise taking them to an art or antique store and getting their advice. A few Years ago my daughter found 2 old paintings in the attic of a house she was renovating and decided to clean them up. She was an amateur artist and thought it was simple ,but soon realised she had problems. On taking them to a well known art store she found these were over 200 years old and worth about $2,000 each -except for the one she had started to 'fix' - it was now worth only 300.
If your 2 stroke dirt bike starts to smoke really bad that means you have to much oil in the fuel or the wrong kind of oil. Or the pistons, oil rings or cylinders are badly worn.
detergent
Being too close to a fireplace or experiencing too much smoke damage will damage an oil painting. Expert restoration artists can restore paintings if they have been damaged.
Any clarifying shampoo.
Oil paintings should not be framed under glass for protection and preservation. Glass can trap moisture and lead to mold growth, and it can also create a barrier that prevents the painting from breathing. Instead, oil paintings should be framed with a protective varnish to shield them from dust and dirt.
To remove contaminates (metal filings, dirt etc.)
oil based primer and then paint it
When you shampoo your hair you remove dirt and oils. The dirt has to be removed because it can harbor bacteria. The oil may be natural oil, so a bit of it is good, but too much can clog pores and leave your hair looking greasy.
are A Montoya oil paintings forth
I am an artist and I store my oil paintings in the freezer with fish surrounding them
Answering "How much are alejandro hidalgo oil paintings worth?"
No, he is known for oil paintings of exotic creatures in their natural habitats.