Dandruff treatment with essential oils. Anti-dandruff massage with essential oils

Extracts of medicinal plants to combat seborrhea and dandruff

White scales in the hair, on the shoulders are infectious fungal disease scalp (dandruff). Eno indicates a weakened immune system or an unbalanced diet; warns that the selected shampoo is not suitable or notifies wrong work sebaceous glands... In any case, the remedy for the treatment must have properties that block the activity of fungi, eliminate inflammation.

Cosmetologists have long noticed that essential oil copes well with this task. It kills the bacteria that cause dandruff (seborrhea), improves blood flow to the scalp, nourishes hair follicles, and normalizes sebum production. A beneficial extract should be selected taking into account the type of hair and the cause of the dandruff. Essential oils have proven themselves well:

• eucalyptus;
• rosemary;
• juniper;
• tea tree;
• lavender;
• fir;
• ylang-ylang.

They perfectly cope with their function (fight against seborrhea, dandruff), but provided that the dosage was correctly selected. Any of the following essential oils may cause allergies, so a small sensitivity test should be done before using it.

Apply to the inside of the elbow and check the body's response. To understand that essential oil is not “suitable”, that it will not save you from dandruff, but will only make it worse, you can use one more way: add a few drops to the hair mask, apply the mixture to the scalp. If there is a strong burning sensation, it must be washed off immediately.

2 The benefits and harms of volatile compounds

A reliable way to combat dandruff is to use ether from eucalyptus leaves. Biologically active ingredients of this plant, they help get rid of dandruff, make curls more shiny, voluminous.

It is enough to rub the extract into the scalp for 10 days a few minutes before washing. This will relieve dry seborrhea. Eucalyptus ester added to infusions, decoctions medicinal herbs, a mask or into water, which rinses the strands after washing, also saves from an infectious disease.

Rosemary is a good antioxidant. It helps to normalize the process of renewal of the stratum corneum of the skin, relieves dandruff, heals small wounds, relieves inflammation, moisturizes the skin. It tightens pores, normalizing the sebaceous glands. In order to completely get rid of dandruff, a course of treatment of 3-4 weeks is enough.

Add rosemary ether to the mask (3 drops of ether per 1 tablespoon of base oil), leave the mixture on the hair for 40 minutes, then rinse. The procedure is repeated three times a week. Rosemary essential oil is often used for aroma combing or rinsing (10 drops per 1 glass of water). It is contraindicated in pregnant women, because early dates can provoke a miscarriage.

Juniper is used to relieve inflammation and stabilize the sebaceous glands, which, as a result, saves from dandruff. The composition is very concentrated, so use it in pure form Not recommended. The ideal option is to add a few drops to the base oil (burdock, castor, olive). Contraindications for use - disruption of the urinary system and pregnancy.

A good helper in the fight against dandruff and seborrhea is the tea tree. Its natural ingredients reduce hair fragility, improve hair volume and growth, eliminate inflammation, improve the functioning of the sebaceous glands, and get rid of dandruff. Essential oil is also used to prevent the appearance of a large number of white scales.

It is added to homemade masks and shampoos, used for aroma combing, rinsing. The dosage is determined on an individual basis, since some may develop an allergic reaction to the components of the tea tree ester.

Lavender, along with tea tree oil, has good antiseptic properties to help prevent dry seborrhea (dandruff). It not only eliminates the cause of the disease, but also relieves unpleasant symptoms.

Lavender essential oil is used for aroma combing, added to medical masks, shampoos or balms. The course of treatment is 2 months, the procedure is carried out once a week. Lavender ester is contraindicated for those taking iron or iodine based medications.

Fir (pine) normalizes the production of sebum, while relieving inflammation, eliminating fungal infections. The tannins, carotene, phytoncides included in its composition, relieve dandruff for a long time, improve hair structures. The essential oil has a tonic and firming effect.

The ether of the leaves of the ylang-ylang tree also has a beneficial effect on the functioning of the sebaceous glands. It improves blood flow to the scalp, "awakening" hair follicles, improving the growth of strands, stopping hair loss. Ylang Ylang has antiseptic properties, eliminating itching and getting rid of dandruff for a long time.

There are many ways to use essential oils. In an attempt to get rid of dandruff, to achieve best result often the most suitable extracts are combined. For example, for oily hair, a composition of 4 drops of rosemary oil, eucalyptus extract and 3 drops of thyme extract is suitable. The mixture is applied to the scalp, massaged for several minutes, then washed off with warm water. Rosemary and eucalyptus will cleanse the skin, destroy fungus, and thyme normalizes sebum production.

Owners of dry hair, if they have dandruff, will benefit from the following composition: 5 ml of shampoo, 4 drops of lemon and geranium extracts are mixed and washed. Vitamin C in lemon essential oil will kill fungus and geranium will make hair smoother and shinier.

Any of the above essential oils should only be used after consulting a trichologist or dermatologist. The reason is the high allergenicity of plant extracts. Side effects may manifest as skin redness, itching, headache, or irritability. Esters should be used very carefully for hypertensive patients, people suffering from cardiovascular diseases, pregnant and lactating women. IN individual cases it is better to refuse to use such remedies for the treatment of dandruff altogether.

3 Consumer opinions

You can judge which essential oil is better than others in helping against dandruff by consumer reviews. For example, in difficult advanced cases, tea tree extract added to burdock oil helps to fight oily hair and dandruff. A warm mixture is applied every other day to the scalp and the root zone of the hair, insulated (a plastic cap, a towel), washed off after 2 hours. Noticeable improvements are visible within a week.

A mask of jojoba oils (3 tablespoons, heated in a water bath), lavender, sandalwood, geranium, juniper extract (5 drops each) will help to cope with severe dandruff and itching, they are thoroughly mixed, applied to the scalp, washed off after two hours ...

Essential oils help fight dandruff well, relieve seborrhea, severe itching, heal wounds. The main condition is "Do no harm!" It is important to choose the right dosage and apply extracts only after consulting a dermatologist, trichologist.

But without external influence it will be very long, but there are many different methods treating this disease. There are scientific methods, special pastes developed by scientists-cosmetologists (for example, Sulsen's paste), but is and traditional methods , which are based on various medicinal plants.

List of plants

From any plant you can get an essential oil that retains all the properties of the plant, despite the processing. Including there are remedies that help with dandruff.

Essential oils for hair against dandruff, obtained from the following plants:

Usage recipes

Shampoo with essential oil

In a regular shampoo, which you wash your hair, add 3-5 ml of any essential oil from the list above, mix thoroughly and apply to the scalp, massaging for 5-7 minutes. Rinse off with hot water.

Mask for oily hair

In one teaspoon of shampoo add 4 drops of rosemary oil, 4 drops of eucalyptus oil and 3 drops of thyme oil, mix thoroughly and apply to the skin. Massage for a few minutes and wash off with warm water.

The action of the ingredients:

• rosemary and eucalyptus will cleanse the skin and destroy the fungus;
• thyme normalizes the work of the sebaceous glands, thereby reducing the production of sebum.

Dry hair mixture

For one teaspoon of shampoo, you need 4 drops of lemon oil and geranium oil. Mix thoroughly and wash your hair with this.

The action of the ingredients:

• vitamin C contained in lemon will destroy the fungus;
• geranium will soften hair and give it volume.

Burr oil

The most the best remedy from dandruff is burdock oil. It is not an essential oil, but the best medicine from dandruff among natural components is difficult to find.

In burdock contains trace elements that destroy the funguscausing dry seborrhea and vitamins nourishing the hair.

Burdock oil can be used alone or mixed with other essential oils. Heat in a water bath 2 tablespoons of burdock oil to room temperature.

Add 3 drops essential oils of tea tree and eucalyptus, (with oily hair) 2 drops - bergamot, (for dry hair) 2 drops of lemon. Rub into scalp and wrap in plastic for 30-40 minutes. Wash off with warm water. Apply 2-3 times a week for 4-5 weeks.

Castor oil

Castor oil is rich in various trace elements, fatty acids, which improve the condition of hair, especially when burned by curling and dyeing.

Recipe number 1

Castor oil without additives

Apply to scalp castor oil and wash your hair after 15 minutes with shampoo. This is a seemingly easy way to get rid of dandruff. The problem is that the product is very dense and viscous, so it is very difficult to apply and, moreover, wash off the hair. This is only possible for thin hair.

Recipe number 2

Diluted castor oil

Heat castor oil in a water bath and mix it with any other vegetable oil (it is better not to take sunflower oil - there is nothing useful in it) in a 2: 1 ratio to make the mixture more liquid. Apply the mixture to the scalp and massage into it. Let it sit for 20 minutes and wash your hair with shampoo.

Recipe number 3

Castor and essential oils

Heat castor oil in a water bath and add 6-8 drops of various anti-dandruff essential oils to it (choose the one you need for your hair type and according to your desire from the list at the beginning of the article). Stir and apply to scalp and hair roots for 30 minutes. Then wash your hair with shampoo.

Plant extracts

In addition to essential and regular oils against dandruff effective remedy is a plant extract.

Garlic- has antifungal effect.

1. Rub the extract into the scalp and hair roots and hold for 5-10 minutes, then thoroughly wash your hair with shampoo.
2. Add 25-30 drops of extract to 1 teaspoon of balm (or 5 ml of extract to 100 ml of balm) and rinse your head with balm as usual.

Sea mustard juice - has anti-dandruff properties.

Recipe: Squeeze the mustard juice, strain and rub into the skin. Rinse off with warm water. Attention! If there is redness, itching, scratches on the skin, it can pinch.

Icelandic moss - perfectly cleanses and tones the skin.

Recipe: dilute the extract with water in a 3: 1 ratio, or take a ready-made water-based extract and rub into your hair. Hold for 15 minutes and rinse with warm water.

Beech- retains water and has antiseptic properties, prevents the skin from being dry.

1. Rub the aqueous extract into the scalp and rinse off after 15 minutes with non-hot water.
2. Prepare a decoction of the kidneys (best in spring): pour 2 tablespoons of the kidneys with a liter of boiling water and let it brew for 1-2 hours, strain and rub into the skin. Wash off after 30 minutes with warm water.

Birch tree- deeply cleanses the pores and normalizes the sebaceous glands.

1. Prepare a decoction of young leaves (50 grams of leaves per liter of water), after boiling, turn off and let it brew for 1-1.5 hours, strain and wash your hair like shampoo, rubbing thoroughly into the skin.
2. Prepare a decoction of swollen buds (100 grams of buds per 1 liter of water), let it brew for 2 hours, strain and rub into the scalp. Hold for 20 minutes and wash your hair with shampoo.

Nettle- tones the skin and cleanses it of sebum and dead skin.

Recipe: prepare a decoction of nettle leaves (50 g per 1 liter of water), let cool and infuse, strain and rinse your hair after washing. Attention! Blond hair may become a shade darker after one application, dark hair - one shade lighter.

Celandine- has antifungal and antiviral properties.

Recipe: mix the prepared extract with shampoo (5 ml per 100 ml of shampoo) and wash your hair as usual.

Precautions

• before use, apply the extract or oil to the back of your hand for 15 minutes - if irritation does not appear, you can use; if it does, look for another way;
• wash off with exceptionally warm waterso as not to irritate the skin from extracts;
• oils and extracts should never get into the eyes; if it does happen, wash your eye with a strong infusion (warm !!!) of black tea (no additives);
• some extracts can change hair color in several shades: lighten dark hair, make light hair dark;
• important! oils are difficult to wash off due to their viscous structure;
• washhead can no more than three times a week;
• course of treatment: 1.5 months; if necessary, repeat the course in 2 weeks.

Exist a large number of ways to cure dandruff, however, none of them will be valid if you do not treat the body from the inside.

Watch your diet: the healthier and healthier the food, the less problems in the body. An organized daily routine and a minimum amount of stress are also an important factor.

The advantage of oils is not so much in their naturalness and chemical harmlessness, but in the general complex effect and enrichment useful substances... After several procedures, seborrhea and unsympathetic white scales will disappear, the skin will also improve and moisturize, the hair will be saturated with vitamins, and the microflora imbalance will decrease.

Treating dandruff with essential oils is much more pleasant and. First, it does not expose the body to a drug threat, because some drugs have a wide list of warnings. Secondly, it is much faster to rub in the oil than to prepare mixtures and boil decoctions. Thirdly, oils smell an order of magnitude better than onion porridge and water infusions. In addition, aromatherapy improves mood, prevents nervous breakdowns and depression, and strengthens the immune system.

The best treatment effect occurs when several oils are mixed or one of them is added to a pharmacy shampoo for seborrheic dermatitis. After all, some essential oils only remove the symptoms of dandruff and return healthy properties to the hair; they can only completely cure seborrhea in combination with ointments or other antiseptic oils.

Probably, at least once in his life, everyone has encountered dandruff - not aesthetic flakes on the shoulders and itching of the scalp always leave behind not the most pleasant sensations. You can solve this problem with the help of numerous shampoos and masks, which are sold in abundance in stores. True, it is not clear which of the means to choose - most often you have to go through several options before the procedures bring the desired effect. In order not to waste time, money and nerves, it is worth turning to such time-tested remedies as essential oils for dandruff. These ingredients can be used both in monomask for massage and in multi-component home recipes for dandruff, the main thing is that they consistently show positive results.

Why are essential oils effective for dandruff?

To understand the principle of action of essential oils on dandruff, it is worth understanding the very principle of the appearance of seborrhea. Increased detachment of scales from skin scalp can be caused by both dry skin and fungal disease - the fungus lives in the sebum, which covers both the scalp and each hair. Under the influence of the waste products of the fungus, the neutral acidity of the secretion of the sebaceous glands changes, and acidic environment begins to irritate the scalp. Most often, dandruff appears due to infectious lesion, which becomes the cause of constant exfoliation of the epidermis in the scalp. Often, the fungus provokes not only seborrhea, but also more serious inflammatory reactions and even skin diseases - psoriasis, dermatitis, folliculitis. As practice shows, dandruff is far from safe, so get rid of it as soon as possible.

What do essential oils do when they get on the scalp? Possessing a pronounced antifungal and anti-inflammatory effect, essential oils reduce the population of the fungus and normalize the secretion of the sebaceous glands. To achieve a sustainable result, home remedies with oils will have to be used for some time - the duration of the course can be up to 1.5 months.

The main condition for getting rid of dandruff with home remedies is the consistency of the procedure. Alternatively, these funds can be used as preventive measures, because in addition to the anti-seborrheic effect, oils have a nourishing and moisturizing effect.

The action of essential oils against seborrhea

Rosemary... It belongs to the list of antioxidant-rich products, it is effective in cleaning the epidermis, overcomes inflammatory reactions on the skin and has a deodorant effect.

Tea tree. Such a remedy can only be used for oily seborrhea. A pronounced drying effect can significantly reduce sebum production and make hair fresh for much longer. As for the antiviral effect, it is also clearly expressed, moreover, such a tool is capable of providing a powerful anti-inflammatory effect, which will allow disinfecting microtraumas that are often found on the scalp when combing itchy accumulations of oily seborrhea. Tea tree oil is effective in homemade masks for dandruff, or even just adding a few drops to a shampoo or regular mask - very effective for hair prone to oily.

Eucalyptus. This essential oil is also a very strong antiseptic, provides anti-inflammatory and astringent effects, helps to effectively cleanse, refresh the skin and get rid of itching.

Ylang-ylang. It is used for fungal skin lesions, itching, foci of inflammation and alopecia.

Juniper. Allows you to get rid of excess sebum, providing a cleansing and antifungal effect, which makes it an effective remedy for dandruff caused by the presence of fungus in the sebaceous glands, a good antiseptic.

Pine. The action of this essential oil is similar to the action of juniper oil - it cleans and deodorizes the skin, and normalizes the sebaceous glands.

How to use essential oils for dandruff correctly?

Essential oils are quite aggressive, so just apply them to your hair or skin large quantities Not recommended. Most often, oils are added to shampoos - fortified detergents allow providing high-quality scalp cleansing, antiseptic or antifungal effect. The rate of essential oil per 1 tsp. shampoo is 2-3 drops. Apply the shampoo to the hair and leave it there for 5-7 minutes to achieve the desired therapeutic effect.

Alternatively, essential oils can be used to prepare massage mixtures / masks. In addition to the oils already listed, the following essential oils may be included in home remedies:

1. black pepper;
2. basilica;
3. thyme;
4. fennel;
5. laurel;
6. bergamot;
7. chamomile;
8. geraniums;
9. lavender.

Several effective recipes

1. Recipe 1... Massage Oil Blend - for oily hair. This mixture includes the following ingredients: 1 tsp. shampoo add 3-4 drops of rosemary oil, eucalyptus and thyme. After applying the enriched shampoo to the head, it is necessary to carry out the mass; and after 5-8 minutes, rinse your hair thoroughly;

1. Recipe 2... Blend of massage oils - for dry hair. By 1 tsp. add 4 drops of lemon and geranium essential oil to shampoo - after a long massage of the scalp, rinse the hair with warm water;
2. Recipe 3... Mask with essential oils - 2 tbsp. add 2-3 drops of eucalyptus and tea tree essential oil of warm burdock oil. If the hair is prone to grease, then 2-3 drops of bergamot oil are added to the mixture, if the hair is dry, then it is worth adding lemon oil. After rubbing the oil mixture into the scalp, you need to wait 40 minutes and rinse off the remains with warm water and shampoo. A course of 15 masks, which are carried out 2-3 times a week, will get rid of dandruff and stop hair loss.

Precautions for using oils

Essential oils often cause allergic reactions. If you are allergic to any of the components home mask there is no information, it is worth conducting a test before applying the product to the scalp. A little mask or oil mixture should be applied to the delicate skin of the inner bend of the elbow - if within 5 minutes you will not feel any negative consequences, then you can safely apply the mask in accordance with the recipe.

Hair masks with natural oils can help with scalp problems if used wisely and regularly. In this article, we will analyze the causes of dandruff and itching of the scalp and tell you how to choose the right treatment based on base and essential oils in order to cure the disease without provoking allergic reaction.

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Causes of dandruff and itchy scalp

Normally, the process of exfoliation of epidermal cells proceeds imperceptibly, without causing unpleasant sensations in a person. Under the influence of internal or external factors the normal process can be disrupted, resulting in a risk of dandruff.

Dandruff is loose pieces of dead skin that, when mixed with sebum, form whitish or yellowish flakes and remain on the scalp. This causes not only aesthetic, but also physical discomfort in a person, since usually the process is accompanied by severe itching.

Symptomatic treatment here will not give a long-term result if you do not understand the reason for the formation of "flakes". The reasons can be internal and external.

Internal factors:

1. Metabolic disorders. Failure of metabolism leads to insufficient absorption of the most important vitamins and minerals and a decrease in immunity.
2. Hormonal disorders... An imbalance in hormones of the endocrine and reproductive systems can provoke problems with the hair and scalp. One of the most common reasons for a visit to a trichologist in women is an increase in the level of a testosterone (male sex hormone) derivative, dihydrotestosterone.
3. Violation of the excretory system, in particular hyperactivity of the sebaceous glands of the scalp.
4. Violation normal microflora skin caused by the spread of the yeast-like fungi P. ovale. Normally, these bacteria inhabit the surface of the skin in small quantities, but under the influence of provoking factors (decreased immunity, taking antibiotics, unhealthy diet), they can exhibit pathological activity.
5. Exhaustion nervous system... Stress, prolonged physical and mental stress, lack of sleep, depression - all this leads to the risk of dandruff and other skin problems.

External factors:

1. Improper care. A banal choice of an unsuitable for skin type or an overly aggressive shampoo can provoke flaking and itching. The same goes for the illiterate use of home masks.
2. Wearing a hat that is too tight and wearing a hat indoors. The first makes it difficult for blood circulation in the scalp and the flow of nutrients to hair follicles... The second creates comfortable conditions for the development of pathogenic microorganisms.
3. Failure to comply with hygiene rules. Neglecting to wash your hair with the necessary regularity leads to clogging of the sebaceous glands and can provoke seborrhea.

How essential oils work against dandruff

Essential oils in trichology are used to combat dryness and dehydration of hair and skin, to eliminate inflammatory processes... They actively nourish, act as antioxidants, have a calming effect, and accelerate the process of tissue regeneration.

To treat seborrhea, you need to use essential oils with pronounced anti-inflammatory and antifungal effects. They not only reduce activity pathogenic bacteriabut also moisturize sensitive irritated skin.

Essential oils with antifungal and anti-inflammatory effect

• Tea tree.Very popular oil in cosmetology. Used only for oily seborrhea. It has a pronounced antibacterial effect, has an anti-inflammatory effect, accelerates the healing of severely combed itchy skin areas. Can be used as part of homemade masks or add 2-3 drops to the shampoo while washing. The oil is effective against dandruff caused by fungus.
• Eucalyptus.Masks with eucalyptus oil significantly reduce itching, refresh the skin, and reduce the production of sebum. The oil has anti-inflammatory and antiseptic properties.
• Rosemary.Rosemary oil is rich in antioxidants, helps to eliminate excess secretions and reduce inflammation on the skin. By adding a few drops of oil to shampoo while washing, hair will look fresher for longer.
• Cedar. Cedarwood oil has an antibacterial effect, stimulates blood circulation, improves skin elasticity, and strengthens hair follicles.
• Ylang-ylang. The oil is effective for fungal skin infections, relieves itching and heals inflamed areas. Can be used for prophylaxis with a tendency to seborrhea.

It is not recommended to use pure essential oils, because in large quantities they act quite aggressively.

Anti-dandruff hair base oils

Base oils, unlike essential oils, can be used in their pure form. They are excellent assistants in complex treatment itching, dandruff and hair loss. Their main purpose in this case is to nourish dry skin and hair, relieve inflammation, and prevent flaking.

The best base oils for dandruff

• Castor. Contains a large amount of vitamin E, due to which it perfectly nourishes the skin and is an antioxidant. The oil is quite thick, so it is inconvenient to use it in its pure form. Can be diluted with burdock or olive.
• Burdock. Contains inulin - absorbent natural origin, has antioxidant and antibacterial effects, removes excess sebum. Burdock oil is very effective for flaking and itchy scalp. It is recommended to apply an oil mask along the entire length - it will restore the structure of the hair shaft and give the hair a healthy shine.
• Coconut. Triglycerides included in the composition reduce itching and inflammation, stimulate hair growth. Coconut oil is very nutritious - it is saved in case of burns and restores damaged sensitive skin... It is also sometimes used to treat cutaneous dermatitis.
• Linseed. Contains unsaturated fatty acids, vitamins and trace elements. Relieves irritation, eliminates flaking and dryness, nourishes hair along its entire length. With regular use, it significantly reduces dandruff and sebum production. Washes well.
• Olive. Good for preventing dandruff. It protects the skin from drying out, which is fraught with peeling and stimulation of the hyperfunction of the sebaceous glands. It is recommended to massage the scalp with olive oil to increase the flow of nutrients and stimulate the natural renewal of epidermal cells.

However, it is necessary to treat dandruff and itching with oils in a comprehensive manner - against the background of eliminating the causes of ailments from the inside.

Anti-dandruff hair mask recipes

1. Mix dandruff shampoo with one tablespoon of olive or burdock oils, add a few drops of tea tree oil. Apply the mixture to the hair roots and massage the skin thoroughly for 5 minutes, then rinse with water at room temperature. If necessary, rinse hair with shampoo again.

It is important to use a specialized pharmacy anti-dandruff shampoo, which can and should be kept on the hair for some time after application. For example, it contains the antifungal component Piroctone Olamine, panthenol and Procapil, a herbal hair growth stimulator. The shampoo blocks the growth of dandruff fungus, eliminates scalp flakes and promotes healthy hair growth.

1. Mix 10 ml olive oil, 5 drops of tea tree oil and 5 drops of eucalyptus oil. Apply the mixture to the scalp and massage thoroughly. Put on a plastic cap and wrap a heated towel around your head. Wash off the mask after an hour with anti-dandruff shampoo.
2. Combine the yolk, 5 drops of rosemary, and a tablespoon of warmed (not hot) coconut oil. Apply the mixture to the roots lightly massage movements, distribute over the entire length. Cover your head with a towel. After 30-40 minutes, wash your hair and apply a nourishing balm, stepping back 7-10 cm from the roots.

The main thing in the treatment of dandruff with oils is consistency. Try to apply masks at least 1-2 times a week for 1-2 months for a lasting result.

Allergic reaction to oils

Many essential oils are very active and can provoke an allergic reaction with serious consequences. If you have not previously used the oil that you plan to add to the mask for cosmetic purposes, you must first conduct an allergy test. Apply a few drops to a cotton swab and inhale the oil several times throughout the day. If you feel good, then the next day, apply a couple of drops of oil to the inner fold of the elbow, mixing it with any base in a 1: 2 ratio. If redness or burning does not appear within an hour, the oil can be used on the scalp.

Oil therapy is a fairly effective home supplement to professional treatment dandruff and itchy scalp. However, it is not a universal panacea, and it cannot completely cure dandruff caused by disease or dietary bias.