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Castor oil hair: Achieve longer and stronger hair

by Lotte Lindgren on Jun 20, 2023

Excellent Based on 3233 reviews
Dorthe Kristensen

Read through by Dorthe Kristensen

Hairdresser and former co-owner of the award-winning hairdressing chain Zoom by Zoom
With many years of experience in the hairdressing industry, Dorthe has advised many customers about hair and hair care. Dorthe has read through this blog entry to ensure high quality and professionalism. This blog post is professionally updated on September 28, 2024.

Table of contents

Do you want longer and stronger hair? Then you should consider using castor oil for your hair. This natural oil, rich in fatty acids and vitamins, is known for its moisturizing and strengthening properties, making it a popular choice for those looking to promote hair growth. Castor oil has been shown to be an effective treatment for hair growth, and it's easy to use at home.

In this guide, we will tell you everything you need to know about castor oil for hair growth and how you can use it for the best results. We will also cover the many ways you can use castor oil in your hair care routine, whether it's as a weekly hair mask, a scalp massage, or in combination with other natural oils. Read on for more information!

    What is castor oil?

    Castor oil is a vegetable oil extracted from the seeds of the castor plant. The American plant has been used for centuries for medicinal and cosmetic purposes due to its anti-inflammatory properties.

    Due to its high content of ricinoleic acid, castor oil is known for its moisturizing properties, which can help fight hair loss and promote blood flow to the scalp, which will contribute to normal hair growth. Castor oil can also be used as a massage oil for the scalp and can help reduce dandruff or dryness in the scalp .

    Castor oil

    How is castor oil extracted?

    The production process of the castor oil implies that the seeds from the plant must first be cleaned and dried. They can then be ground down to a fine mass and pressed for the oil. There are both cold-pressed and hot-pressed castor oil, where the difference lies in the temperature during the pressing.

    Cold-pressed castor oil is more health- and skin-friendly than hot-pressed and has anti-inflammatory properties.

    The various techniques to extract the oil also include chemical processes or solvents. It is important to pay attention to the production method, as it can result in a more or less pure oil with different properties.

    Cold-pressed castor oil is often considered the most health- and skin-friendly version due to its high nutritional content and anti-inflammatory properties. This type of oil works well as a massage oil for the hair or as a moisturizing treatment for dry skin.

    Heat-pressed castor oil, on the other hand, lost some of its beneficial substances during heat treatment, but is still considered effective against hair loss and stimulating hair growth thanks to its high amount of fatty acids.

    Castor seeds turn into oil

    What are the benefits of castor oil for hair?

    Using castor oil on hair has long been known for its ability to promote hair growth. This is largely due to the oil's high content of ricinoleic acid, which is an acid that helps increase blood circulation in the scalp, thereby stimulating the hair follicles with nourishment. This improved blood circulation can also contribute to better hair health and appearance, as it ensures a better supply of nutrients to the hair roots.

    Besides promoting blood circulation in the scalp, regular use of castor oil on hair can also improve the quality of your existing hair. Castor oil for hair acts as a moisturizer and has anti-inflammatory properties on both hair and skin, which helps provide healthier and more shiny hair. This can be particularly beneficial for those with dry and damaged hair, as the oil can help restore moisture balance and seal the hair’s cuticle, resulting in smoother and more manageable hair.

    Another benefit of castor oil for hair is its antibacterial properties, which can reduce dandruff and itchiness in the scalp. This makes the oil suitable as a massage oil, as it can help soothe an irritated or inflamed scalp. By reducing bacteria and fungi that can cause dandruff, castor oil on hair can help maintain a healthy scalp environment, which in turn can contribute to healthy hair growth.

    Scientific evidence for the effect of castor oil on hair

    Castor oil, also known as American oil, has long been known for its potential to promote hair growth and improve hair health. But what does the scientific evidence say about this claim? Let's look at the research behind castor oil's effect on hair.

    One of the primary reasons castor oil is thought to promote hair growth is its high content of ricinoleic acid. Ricinoleic acid is a natural omega-9 fatty acid believed to have a stimulating effect on hair follicles by increasing blood circulation in the scalp. This can potentially lead to increased hair growth.

    There are a number of studies that suggest it can have an effect on the health of hair and scalp. Some studies indicate that the moisturizing and anti-inflammatory properties of ricinoleic acid can help improve hair texture and combat dryness in the scalp. However, there are no definitive results from these studies.

    It is important to note that these studies are still limited, and more research is needed to confirm and elaborate on the findings. Therefore, one should be cautious about drawing definitive conclusions based on these studies alone. Individual results from using castor oil for hair can also vary, as hair growth and hair health depend on many factors such as genetics, lifestyle, and nutrition.

    How to use castor oil for hair growth

    Castor oil is a popular ingredient for promoting hair growth and strengthening hair strands. You can apply castor oil on hair as it is, but it is important to get a good quality oil to ensure the best results. Cold-pressed and organic castor oil is often the best type, as it retains more of the natural nutrients. You can also advantageously mix it with other oils for the hair. Gently massage the oil into your scalp in circular motions to stimulate blood circulation and increase the absorption of the oil. The massage can also help loosen dead skin cells and promote a healthier scalp, ultimately contributing to better hair growth. Distribute the remaining oil through the lengths of your hair to ensure it also benefits from the oil. Let the oil sit for at least 30 minutes before thoroughly rinsing it out with shampoo.

    For the best results, you should use castor oil on your hair once a week. It can also be beneficial to combine the use of castor oil for hair with other natural ingredients such as aloe vera or coconut oil for additional nourishment and care for the hair. Aloe vera can help soothe an irritated scalp and reduce dandruff, while coconut oil adds moisture and nourishment to the hair lengths.

    Always consult your hairdresser or dermatologist if you experience problems with your hair growth or have sensitive skin on the scalp.

    Woman uses castor oil for her hair

    Step by step guide to applying castor oil to hair

    • Wash your hair: Start by washing your hair thoroughly to remove dirt, oil, and product residue so that the castor oil can penetrate better into the hair follicles and scalp. Lightly towel dry your hair so it is still slightly damp but not soaking wet.
    • Warm the castor oil: It is a good idea to make sure that castor oil for hair is slightly warm, as warm oil is more easily absorbed by the scalp and hair strands. Warm the oil gently by rubbing it between your hands or placing the bottle in a bowl of warm water for a few minutes. This makes the oil more liquid and easier to apply.
    • Apply the oil to the scalp: Apply the oil in small amounts directly to the scalp with a brush or your fingertips. To avoid making your hair too greasy, it can be a good idea to use a dropper to apply small amounts at a time. Gently massage the scalp in circular motions for about 5 minutes to stimulate blood circulation and increase the absorption of castor oil into the hair. This massage also helps improve blood flow, which is good for promoting healthy hair growth.
    • Distribute the oil through the hair lengths: Distribute the oil evenly through the lengths of your hair if desired. If you have dry or damaged hair, you can focus on the ends as they often need extra moisture and care.
    • Let the oil work: Let the oil sit overnight or for at least 30 minutes before washing your hair again. For a deeper treatment, you can wrap your hair in a warm towel or a shower cap, which will help lock in moisture and intensify the effect of the oil.
    • Wash out the oil: Rinse the oil thoroughly out of your hair with warm water and a mild shampoo. You may need to wash your hair twice to remove all the oil, especially if you have used a large amount.
    • Repeat regularly: Repeat this process every week for the best results. With regular use, you will begin to see improvements in hair growth, health, and shine.
    • Test for allergic reactions: Always test the product on a small area of your skin before use for any allergic reactions. This is especially important if you have sensitive skin or are prone to irritation. Apply a little castor oil to the inside of your wrist and wait 24 hours to see if irritation occurs.

    How to make your own scalp treatment with castor oil

    Making a homemade scalp treatment with castor oil is an easy and effective way to care for your scalp. Here's a simple recipe:

    Ingredients:

    • 2 tablespoons castor oil
    • 1 tablespoon coconut oil or olive oil (optional, but can add extra moisture)
    • 5 drops rosemary essential oil (optional, but can help stimulate hair growth and improve scalp health)

    Instructions:

    • Mix castor oil and any coconut oil or olive oil in a small bowl.
    • If you choose to add rosemary essential oil, add it to the mixture.
    • Warm the oil slightly by placing the bowl in a bowl of warm water for a few minutes. This will help the oil penetrate the scalp better.
    • Apply the oil evenly to your dry scalp using your fingers or a brush.
    • Use your fingertips to massage the oil into the scalp in circular motions for about 5-10 minutes to ensure the oil is well distributed and stimulates blood circulation.
    • After the massage, you can leave the oil on for a further 30 minutes or even overnight for extra intensive care.
    • Rinse the oil out with warm water and a mild shampoo. You may need to wash your hair twice to remove all the oil.
    • Repeat this treatment once a week or as needed to maintain a healthy and hydrated scalp.

    Regular use of castor oil on hair can help promote healthy hair growth, moisturize your scalp, and reduce dandruff and dryness. It is a natural way to care for your hair that both nourishes and strengthens.

      Apply castor oil to the lengths

      How often should you use castor oil for hair growth?

      Use castor oil on your hair once a week to see results. If you use the oil more often, avoid overdoing it, as this can result in greasy and heavy hair. It is also important to ensure that the hair is thoroughly washed after using castor oil on the hair to avoid product buildup. After applying the oil treatment, it’s also best to avoid using heat styling tools.

      To summarize:

      • Use castor oil on hair at least once a week
      • Avoid overdoing it
      • Avoid using heat styling tools after treatment

        Tips and tricks to get the best result with castor oil for hair

        Add a few drops of rosemary oil to your castor oil treatment for extra stimulation of hair growth. Rosemary oil has been known for its stimulating properties on the hair follicles and can increase blood flow in the scalp, which can lead to better hair growth . Remember to dilute the oil with castor oil before use.

        Maintain regular care using practical treatments such as oils until your goals are achieved. Depending on your desire for length and strength, you may need to apply castor oil to your hair several times a week over a longer period of time. Hair care is also about patience and consistency.

        Always try to choose natural products without additives and chemicals to avoid damage to the hair. Castor oil is already a natural product, but it is important to make sure that the other ingredients in your hair products do not damage your hair more than they repair it. Natural ingredients such as aloe vera or argan oil can also be effective supplements to your care routine, making your hair shiny when used together with castor oil.

        Possible side effects of using castor oil for hair

        Although castor oil for hair has many benefits, there can also be some side effects when using it:

        Allergic reactions: Some people may be allergic to castor oil. It is important to perform a patch test on a small area of skin before using the oil on the hair to ensure no allergic reactions occur. Signs of an allergic reaction may include redness, itching, or swelling, and if you experience any of these, you should stop using it immediately.

        Thick consistency: Castor oil has a thick and heavy consistency, which can make it difficult to wash out of the hair. This can result in greasy or heavy hair if not removed properly. It is important to thoroughly clean the scalp, which can be done with a scalp brush or scalp scrub.

        Over-moisturizing: If castor oil is used in large amounts or too often, it can lead to over-moisturizing the hair. This can result in hair feeling greasy or oily, and it can also make the hair more prone to damage.

        Clogged pores: If the oil is not properly rinsed out of the scalp, it can lead to clogged pores and acne on the scalp, especially for those prone to oily hair or acne.

        It is important to use castor oil on hair with caution and not to overdo it to avoid these side effects. If you experience any of these side effects, stop using the oil and consult a doctor or dermatologist.

        Scalp brush

        What else can castor oil be used for?

        Castor oil is a versatile oil that has many uses beyond hair care. Here are some other areas where castor oil can be used:

        Skincare: Castor oil is known for its moisturising properties and can be used on the skin to hydrate and nourish. It can be particularly beneficial for dry areas such as elbows, knees and heels. The oil can also be used to soften and condition the skin on the lips and around the nails.

        Makeup remover: Castor oil can be used as an effective and natural makeup remover. Due to its thick consistency, it is particularly good for removing waterproof makeup and mascara, while moisturising and nourishing the skin.

        Massage oil: Due to its moisturising and soothing properties, castor oil can be used as an excellent massage oil. It can help relieve muscle tension and soreness while leaving the skin soft and moisturised.

        Eyebrow and lash growth: Due to castor oil's ability to promote hair growth, it can also be used to strengthen and promote the growth of eyebrows and lashes. Apply the oil gently to the eyebrows and lashes every night before bed for best results.

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