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How to Conserve Your Art Collection

Simple Ways to Varnish Your Originals to Improve Their Longevity

Friday, May 3, 2024

Now that I have been creating oil paintings for almost two decades, I have become more interested in art conservation. How can I ensure my paintings will last for generations and make it into the Louvre one day?

My team and I have extensively researched how art museums conserve their oil paintings and prevent them from fading. I want to share my knowledge with you.

How to Conserve Your Art Collection

As you know, ultraviolet (UV) rays are responsible for color fading in original artwork and prints. Ambient light coming from nearby windows is not a major issue, but direct afternoon sun should be avoided. Warm pigments like red and orange tend to fade first with exposure to ultraviolet sunlight. Red pigments absorb higher energy light rays (blue light), and this changes the complex molecules that create the red pigment.

But don’t worry! There are things you can do in your home to prevent damage from UV rays. You can use UV glass in rooms with original artwork (UV glass is perfectly clear, not tinted), or you can also use UV-filtering shades. 

The heat generated from halogen and incandescent bulbs can also damage artwork over long periods of time. I recommend using high-CRI LED bulbs, which don’t generate any heat. High-CRI means the bulbs have a high Color Rendering Index, which means they illuminate the full spectrum of color. This has the added benefit of making your artwork look better since you can see the cool tones and the warm tones in your painting without the colors looking muddy. I recommend Soraa Vivid LED bulbs, which come in assorted bases to fit different light fixtures.

Those of you hanging your artwork over a fireplace don’t have to worry about damage from heat as long as you have a thick mantle. A fireplace mantle prevents heat from reaching the painting.

When my paintings come off the easel, they are put on open drying racks to cure for eight weeks before they are framed. This gives the impasto oil painting a chance to harden enough so it can be varnished. We use a retouching varnish as the initial layer of varnish on the originals.

A retouching varnish gives a layer of breathable protection over a freshly painted oil painting, preventing small particles of dirt from embedding in the oil paint. It is called a “retouching varnish” because it is used in museums to protect fresh oil paint added to touch up a painting.

It is important to allow an impasto oil painting to dry for two to three years before applying a finishing varnish. The paint should be hard enough so you can’t make a dent with a fingernail. (If you apply a finishing varnish while the painting is still curing, it will cause the oil paint to rot and crack underneath since oil paint needs to be able to breathe to cure properly.)

We recommend apply a high-quality finishing varnish to your fully-cured oil painting, to protect it from UV rays. This is like putting a pair of sunglasses over your painting to protect it from color fading. We recommend Conservar Finishing Varnish by Rublev Colours, which is available online from Natural Pigments. This is the only final painting varnish we have found that offers UV protection. Another benefit of this varnish is that it won’t yellow for a hundred years, unlike dammar varnish, which yellows after ten years.

However, regardless of varnish, you can prevent UV rays from reaching your art collection by using UV glass or screens in your home, and you can replace your heat-generating light bulbs with Soraa Vivid LED bulbs.


Watch this video to learn more about how to clean and varnish your painting. 


Do 3D Replicas Need to be Varnished?


My 3D Textured Replicas are fully varnished with three layers of UV protective varnish. If you are collecting them, you should still protect your prints from direct sunlight, but these 3D replicas have built-in resistance to fading.


Future Conservation Plans


I am designing a floater frame for my original oils that will float a piece of UV museum glass above the painting. I just need the equipment to cut glass in my wood shop...

I’ll be sure to let all my collectors know when we have our new “EH Museum Frame” available for purchase. 

About Erin

ERIN HANSON has been painting in oils since she was 8 years old. As a teenager, she apprenticed at a mural studio where she worked on 40-foot-long paintings while selling art commissions on the side. After being told it was too hard to make a living as an artist, she got her degree in Bioengineering from UC Berkeley. Afterward, Erin became a rock climber at Red Rock Canyon, Nevada. Inspired by the colorful scenery she was climbing, she decided to return to her love of painting and create one new painting every week.

She has stuck to that decision, becoming one of the most prolific artists in history, with over 3,000 oil paintings sold to eager collectors. Erin Hanson’s style is known as "Open Impressionism" and is taught in art schools worldwide. With millions of followers, Hanson has become an iconic, driving force in the rebirth of impressionism, inspiring thousands of other artists to pick up the brush.