How to whiten yellowed curtains?

5.12.2025

Curtains, which soften the daylight in homes and add spaciousness to the room, can change colour over time, leading many people to wonder how to whiten yellowed curtains or how to apply a natural approach to whitening yellowed curtains. Yellowing can be more noticeable on sheer curtains that are constantly exposed to light during the day, models located near the kitchen, designs used in poorly ventilated areas, and surfaces that collect dust. The texture of the curtains, the type of fabric used, their layered structure, accessories, and even the environment in which they are hung can affect the yellowing process. Therefore, cleaning curtains using the correct methods both preserves their texture and improves the overall appearance of the space. Whether the curtain is a model with simple lines or has a patterned, sheer, or pleated design, a cleaning approach suitable for the surface can make the colour of the curtains more balanced.

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What causes curtains turn to yellow?

One of the main causes of yellowing is environmental conditions. Thin fabrics such as sheer curtains absorb more sunlight and may change colour over time. In rooms with poor ventilation, the air that accumulates inside can increase the amount of particles that stick to the fibres of the curtains. Curtains used in areas where food is prepared, especially in kitchens with high oil vapour, are more prone to yellowing. Heating systems used in the home can also cause particles in the air to be transferred to the curtain surface. When all these factors combine, the curtain may lose its original colour and take on a paler tone. While it may not be possible to completely prevent yellowing, regular maintenance can make a significant difference in this process.

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What should be considered before bleaching curtains?

Before bleaching curtains, it is necessary to examine the fabric structure. Different materials such as linen, cotton, polyester blend or fine mesh tulle may react differently to cleaning methods. The method used for a thin-surfaced curtain may not have the same effect as the method used for a thick-textured curtain. Additionally, it is necessary to check whether the metal or plastic curtain accessories on the curtain can come into contact with water. Before starting the cleaning process, gently dusting the curtain helps to achieve a more balanced result. Depending on the sensitivity of the curtain fabric, it is necessary to avoid high temperatures, aggressive cleaning approaches, or excessive pressure. This allows the cleaning process to proceed in a more controlled manner.

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What are the methods for whitening curtains?

There are many ways to whiten curtains, but the important thing here is to choose the most suitable method without damaging the surface. As the texture of each curtain is different, it is not expected that a single method will give the same result on all surfaces. The IKEA approach always emphasises gentle and controlled cleaning steps that do not damage the surface. There are methods that can be used to extend the life of curtains and reduce yellowing.

Natural whitening method with bicarbonate of soda and vinegar

Natural methods can offer safe and gentle options, especially for curtains made of delicate fabrics. A balanced mixture of bicarbonate of soda and vinegar in warm water can be gently applied to the curtain surface. This method provides a gentler cleaning process, especially for users wondering how to whiten yellowed sheer curtain. Natural ingredients can reduce yellowing without putting excessive pressure on the curtain fibres. When performing this application, care should be taken to ensure the curtain does not remain in water for an extended period

Should bleach be used? Advantages and risks

Some users may prefer this method due to the powerful effect of bleach. However, bleach can cause colour differences on delicate surfaces, deformation of fibres, and unwanted tone lightening. Bleach can have unexpected effects, especially on lace, embroidered, or finely woven curtains. Therefore, if you are not familiar with the curtain fabric, it is best to evaluate this method with caution. Choosing gentler methods to prevent damage to the curtains is a healthier choice in the long run.

Whitening curtains with lemon salt

When combined with water, lemon salt has a slight lightening effect. It is a method preferred by many users due to its natural composition. Lemon salt added to warm water can lighten yellowing without putting too much pressure on the curtain fibres. This method can offer a more balanced result without using chemical ingredients, especially for those wondering how to whiten yellowed curtains. It can be applied multiple times when necessary on non-sensitive surfaces.

Whitening method with oxygenated water (hydrogen peroxide)

Oxygenated water is an effective method for mild yellowing. It offers a gentler effect compared to more aggressive methods. However, it is important to test a small section of the fabric before application. This allows you to see how the curtain's fabric structure will react. Oxygenated water offers an option that can be applied without putting too much strain on the surface when researching how to whiten yellowed curtains.

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How should lace and delicate curtains be cleaned?

Lace or finely woven curtains require extra care during cleaning due to their intricate weave details. Aggressive cleaning methods can damage the fibres. Especially for products with a layered structure, such as folded curtain models, the cleaning process should be carried out with gentler steps. Avoiding high heat on these types of curtains helps the fabric maintain its shape for longer. Allowing the curtain to dry naturally after cleaning is the healthiest approach.

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Tips to prevent curtains from yellowing

Although it is not possible to completely prevent yellowing, proper care can significantly slow down the process. Regularly dusting curtains prevents particles that accumulate on the surface from penetrating the fabric. Thick-textured background curtains and blackout curtains, which filter light intensely, may require more frequent care as they can collect more dust. Changing the direction of the curtains from time to time can reduce the load created by sunlight on the surface. Curtains used in conjunction with curtain models can distribute the effect of light more evenly, delaying yellowing. Regular ventilation is also an important factor in helping curtains stay clean for longer.

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Common mistakes made when cleaning curtains

Some mistakes made when cleaning curtains can make yellowing more noticeable rather than reducing it. Using very hot water can damage the fibres, especially in delicate fabrics. Dusting curtains before cleaning can cause particles on the surface to cling to the fabric more. Sheer curtains are particularly delicate and cannot withstand excessive pressure, so gentle cleaning methods should be preferred. Cleaning blinds together with curtains can cause colour differences in delicate curtains. Therefore, the appropriate approach should be chosen for each type of curtain.

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When are professional curtain cleaning services required?

Professional support may be considered in cases where methods that can be applied at home do not yield results. A specialist cleaning approach may be a more appropriate option, particularly for roller blind models with large surfaces or curtains that have been yellowed for a long time. Furthermore, seeking professional support for specially treated curtains both preserves the fabric and provides a more balanced cleaning result. While home methods may suffice for some curtains, an expert approach is a safer solution for specially designed products.

Product Information

How to whiten yellowed curtains?

What causes curtains turn to yellow?

HANNALILLbackground curtain, 1 pair, dark blue