Marianne Martinez
Watercolour pans do not have an expiration date and can last for a very long time, even decades, if stored properly. Pans are stored in a dry state, so not much can go wrong with them. However, it's important to ensure they are completely dry before covering them to prevent mould. Over time, watercolour pans may face issues such as shrinkage, cracking, or the paint coming away from the edges, but these rarely affect the quality of the paint.
| Characteristics | Values |
|---|---|
| Do pans expire? | Watercolor pans do not expire, but they can get more difficult to use over time. |
| How long do they last? | Watercolor pans can last for a very long time, even over 40 years. |
| How to make them last longer? | Allow them to dry completely before covering them and storing them in a cool, dry place. |
| What happens if they are not used for a long time? | Paint shrinkage, cracking, and separation from the edges of the pan may occur. Mold, fungus, and mildew can also develop. |
| Can they be revived? | Yes, by adding a drop of glycerin or gum arabic to the pan of old watercolor. |
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What You'll Learn
Watercolour pans rarely expire
Watercolour pans can last for an unlimited amount of time if they are cared for properly. Since the paint in watercolour pans is already dry, it is important to keep them completely dry when not in use to prevent mould. To prevent mould, ensure there is proper air circulation and do not close the lid tightly. If you live in a humid environment, you may have to take extra measures to ensure your pans are staying dry.
Over time, the paint in the pan may seem to contract and shrink in volume. While this does not affect the quality of the paint, it reduces the amount of paint available. If you have old watercolour pans and the paint smells musty or doesn't dissolve properly, it is probably best to replace them.
To prolong the useful life of your watercolour pans, the right storage is important. Store the pans in a cool, dry place. If the paint inside the pan is still slightly moist, you can try adding a drop of gum arabic or glycerin.
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Proper storage is key to longevity
Watercolour pans do not have an expiration date, but they can be affected by how they are stored. Proper storage is key to their longevity.
Firstly, it is important to let the pans dry completely before covering them. This is the best way to prevent mould. Once they are totally dry, cover the pans and store them in a cool, dry place. If you live in a humid environment, you may need to take extra measures to keep your pans dry. Some artists store their paints in airtight jars to prevent moisture from escaping. However, this may not work in humid climates.
If you are storing your pans for a long time, it is a good idea to open the container and check on them occasionally. Make sure there is proper air circulation and do not leave them soaking wet with a tight lid.
If your watercolour pans are cracking and breaking into pieces, you can try "gluing" the paint pieces in place with gum arabic. You could also try reconstituting the paint with water and adding gum arabic. If the paint is shrinking and coming away from the edges of the pan, this does not affect the quality of the paint, and you should still be able to use it.
Some pigments can dry into a rock-like texture and become very difficult to rewet. To prevent this, only squeeze out a small amount of paint and try to use it sparingly.
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Tube paints dry out, pans don't
Watercolour tubes are filled with wet paint, so they will dry out eventually. No one can say for sure how long a watercolour tube will last before it dries out, as it depends on the brand, paint quality, and how it is stored. The paint inside the tube may still be slightly moist, and it can be rehydrated with water.
Watercolour pans, on the other hand, can last for an unlimited amount of time if they are cared for properly. Since the paint in watercolour pans is already dry, it is important to keep them completely dry when not in use to prevent mould. To prevent mould, it is recommended to let the paint pans dry completely before covering them and storing them in a cool, dry place.
If you have tubes of watercolour paint that have dried out, you can carefully slice the tube open and transfer the dry paint to a well of a watercolour palette. You can then add a few drops of water to the dry paint and use it like a pan of watercolour.
It is worth noting that watercolour paints do not technically expire, but they can develop issues over time due to age, storage conditions, and the intrinsic nature of the pigment. For example, paint in pans may shrink over time, reducing the amount of paint available. Additionally, some pigments may dry into a rock-like state and become very difficult to rewet.
To summarise, tube paints can dry out over time, but they can be rehydrated and used like pan paints. Pan paints do not dry out because they are already dry, but they must be stored properly to prevent mould.
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Dry tube paint can be rehydrated
Watercolor paints do not expire, but they can get more difficult to use over time. Watercolor pans typically last much longer than tubes, as tubes dry out eventually. However, even if the paint inside a tube has dried out, it can be rehydrated and used.
If you have a dried-out tube of watercolor paint, you can carefully slice the tube open with a sharp object and transfer the dry paint to a well of a watercolor palette. It may be helpful to use a pair of needle-nose pliers to peel the tube material away and wear gloves to prevent staining your hands.
Once the dry paint is in the palette, add a few drops of water to rehydrate the paint. You can use a brush to scrub the paint and pick up some color. Try the paint out on a piece of scrap paper to see if it works. If the paint doesn't dissolve properly, you may need to add a drop of glycerin or gum arabic to improve its consistency.
To prevent watercolor tubes from drying out, it is important to clean the threads on the tubes and tighten the caps properly. Store the tubes in a cool, dry place and use them within a few years of purchase. Additionally, avoid exposing the paints to extreme temperatures and consider purchasing smaller tubes that can be used up more quickly.
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Pans can crack and shrink over time
Watercolour pans can last for an indefinite amount of time if they are stored and cared for properly. However, it's important to note that the paint may crack, shrink, and come away from the edges of the pans over time. While these issues are mostly aesthetic, they do not affect paint quality, but they can be frustrating to deal with.
To prevent cracking and shrinkage, it is crucial to let the pans dry completely before covering them. Proper ventilation is key. Avoid closing the lid when the pans are still wet, as this can trap moisture and lead to mould growth. Once the pans are dry, cover them and store them in a cool, dry place. If you live in a humid environment, you may need to take extra measures to ensure your pans stay dry, such as using airtight containers.
If your watercolour pans do start to crack, you can try "gluing" the paint pieces back together with gum arabic. You can also reconstitute the paint with water and add gum arabic to restore its original consistency. However, if the paint has dried out too much, it may be difficult to rewet. In this case, adding a drop of glycerin or honey might help, although this may not work for all pigments.
It's worth noting that while cracking and shrinkage don't impact paint quality, they do reduce the amount of paint available. This can be a nuisance, especially if you're in the middle of a project and don't have a backup pan. To minimise waste and maximise the life of your pans, it's important to follow the storage guidelines and regularly check your pans for any signs of deterioration.
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Frequently asked questions
Watercolour pans do not expire, but they can get more difficult to use over time. As long as you allow them to dry out before closing the lid, they should last for many years.
Watercolour pans can last for over 40 years if stored properly.
To store your watercolour pans, let the paint dry completely before covering them. Once they are totally dry, cover the pans and store them in a cool, dry place.
