Can Grey Hair Be Reversed? Causes, Vitamins and Supplements Explained

Grey hair is a natural part of ageing, but it can also appear earlier than expected. This often leads people to search for vitamins, supplements, shampoos and lifestyle changes that may slow the process or restore their natural hair colour.

So, can grey hair actually be reversed?

In most cases, age-related or genetically determined grey hair cannot currently be reversed reliably. Once the pigment-producing system within a hair follicle has been significantly depleted, the follicle may continue growing hair with little or no colour.

However, the answer is not always completely straightforward. Some cases of premature greying may be associated with nutritional deficiencies, thyroid conditions, certain medicines, smoking or other health factors. Research has also documented individual hairs temporarily regaining pigment under particular circumstances.

This guide explains why hair turns grey, whether vitamins and supplements can help, what the research says about catalase and antioxidants, and when it may be worth speaking with a healthcare professional.

Those comparing products can explore Bodytonix’s range of grey hair support products, including nutritional formulas, shampoos and targeted hair wellness products.

Why Does Hair Turn Grey?

Hair colour is created by a pigment called melanin.

Within each active hair follicle, specialised cells called melanocytes produce melanin and transfer it into the growing hair shaft. The amount and type of melanin produced help determine whether hair appears black, brown, blonde, red or another shade.

Melanocytes do not work independently. They are replenished by melanocyte stem cells located within a specialised area of the hair follicle.

As hair repeatedly progresses through its natural growth cycles, these stem cells help generate new pigment-producing cells. With ageing, the system can become less effective.

Research published in Nature found that ageing melanocyte stem cells may become trapped in areas of the follicle where they can no longer mature into pigment-producing melanocytes. As fewer functioning melanocytes reach the growing hair, the new strand contains less pigment and may appear grey, silver or white.

Greying is therefore not simply a surface-level change to an existing strand. It reflects changes occurring within the follicle as new hair is produced.

What Is the Difference Between Grey and White Hair?

Individual hair strands do not usually turn a uniform shade of grey.

Hair appears grey when pigmented strands are mixed with strands containing little or no melanin. As the number of unpigmented strands increases, the overall head of hair can look progressively greyer.

A strand that has almost completely lost its pigment may appear:

• White
• Silver
• Translucent
• Pale yellow under some lighting

Hair texture may also change with age. Some people notice that grey or white hair feels coarser, drier or more difficult to manage than their previously pigmented hair.

At What Age Does Hair Normally Turn Grey?

There is no single age at which everyone begins to grey.

Genetics strongly influence when the process starts, how quickly it progresses and which areas are affected first. Some people notice their first grey hairs in their twenties, while others retain most of their natural colour into later life.

Research definitions of “premature greying” vary according to population and ethnic background. A commonly cited definition describes greying as premature when it begins before:

• 20 years of age in people of European ancestry
• 25 years of age in people of Asian ancestry
• 30 years of age in people of African ancestry

These figures are research conventions rather than strict diagnostic thresholds. Family history, the number of grey hairs and the speed of progression are also important considerations.

People who notice greying considerably earlier than close family members may wish to discuss it with a healthcare professional, particularly when other symptoms are present.

Can Grey Hair Be Reversed Naturally?

For most people with age-related or hereditary greying, there is currently no scientifically established method that consistently restores natural pigment.

Once melanocyte stem cells or mature melanocytes have been extensively lost or impaired, nutritional supplements and lifestyle changes may not be able to recreate the missing pigment-producing system.

However, researchers have documented occasional examples of hair repigmentation.

A human study that examined pigmentation patterns along individual hair shafts found that some grey hairs regained colour over a limited period. Certain changes appeared to correspond with changes in psychological stress, although the number of people studied was small and the findings do not establish a dependable treatment.

Grey hair repigmentation has also been reported in connection with:

• Correction of certain nutritional deficiencies
• Treatment of some underlying health conditions
• Particular prescription medicines
• Changes in inflammatory or immune activity

These cases are uncommon and do not mean that ordinary age-related greying can generally be reversed.

A more realistic goal may be to identify avoidable contributors, correct genuine deficiencies and support overall hair health rather than expecting every grey strand to regain its original colour.

What Causes Premature Grey Hair?

Premature greying usually does not have one simple cause. Genetics remain one of the strongest influences, but several additional factors have been investigated.

Genetics and Family History

Family history is often the clearest predictor of early greying.

When parents or close relatives began greying at a young age, the likelihood of experiencing a similar pattern may be higher. Genetic factors can affect melanocyte survival, antioxidant defence, pigment production and the rate at which follicular ageing occurs.

A supplement cannot necessarily override a strongly inherited pattern.

Oxidative Stress

Oxidative stress occurs when reactive molecules exceed the body’s ability to neutralise them effectively.

Melanin production naturally generates reactive oxygen species. Hair follicle melanocytes therefore require effective antioxidant protection while producing pigment.

With ageing, antioxidant defences within the follicle may weaken. Research has found increased hydrogen peroxide and reduced catalase activity in grey or white hair follicles.

This has contributed to interest in antioxidants and catalase supplements. However, identifying an oxidative mechanism does not prove that taking an oral antioxidant or enzyme supplement will reverse the process.

Vitamin and Mineral Deficiencies

Some studies have reported associations between premature greying and lower levels of nutrients such as:

• Vitamin B12
• Folate
• Iron or ferritin
• Copper
• Vitamin D
• Calcium
• Zinc

The findings are not completely consistent across studies, and an association does not necessarily prove that the deficiency caused the grey hair.

Nevertheless, identifying and correcting a genuine nutritional deficiency may be worthwhile for overall health and may help in selected cases where the deficiency contributed to early pigment changes.

Taking large amounts of nutrients without evidence of a deficiency is unlikely to provide the same benefit and may create safety risks.

Thyroid Conditions

Both overactive and underactive thyroid conditions have been discussed in relation to premature greying and changes in hair texture or growth.

Grey hair alone does not mean someone has a thyroid disorder. However, medical assessment may be appropriate when greying appears alongside symptoms such as:

• Unexplained weight changes
• Ongoing fatigue
• Heat or cold intolerance
• Changes in heart rate
• Dry skin
• Increased shedding
• Menstrual changes

Autoimmune and Pigment Conditions

Autoimmune conditions can sometimes affect melanocytes or other components of the hair follicle.

Vitiligo, for example, involves loss of pigment-producing cells and may result in white skin patches or localised areas of white hair.

Alopecia areata can also occasionally be associated with changes in hair pigmentation, particularly when pigmented hairs are preferentially lost or when regrowth initially lacks colour.

Sudden patches of white hair or accompanying skin changes should be medically assessed.

Smoking

Observational studies have found an association between cigarette smoking and earlier hair greying.

Smoking may increase oxidative stress, affect circulation and expose tissues to compounds capable of damaging cells. However, these studies cannot prove that smoking is the only cause of greying in an individual.

Avoiding smoking remains beneficial for overall health regardless of its effect on hair colour.

Psychological Stress

Many people believe a highly stressful experience caused them to “go grey overnight.”

Existing hair shafts cannot suddenly lose all their pigment overnight. However, stress may influence the biology of the follicle and the activity of melanocyte stem cells.

Animal research has shown that intense stress responses can deplete melanocyte stem cells. Human research has also found that pigmentation changes in individual hairs can sometimes correspond with periods of greater or reduced stress.

This does not mean that reducing stress will consistently reverse established grey hair. It does suggest that the relationship between stress and pigmentation may be more biologically complex than previously assumed.

Certain Medicines

Hair repigmentation or greying has occasionally been reported during treatment with certain medicines.

These changes are uncommon and may involve drugs affecting immune activity, inflammation, hormones or cellular signalling. Never stop or change a prescribed medicine because of a hair-colour change without speaking with the prescribing healthcare professional.

Which Vitamins May Help with Premature Grey Hair?

There is no vitamin proven to reliably restore natural pigment in everyone.

Vitamins may be most relevant when a person has a confirmed deficiency or inadequate dietary intake.

Vitamin B12

Vitamin B12 is required for normal red blood cell formation, neurological function and DNA synthesis.

Several studies have reported lower vitamin B12 levels among some people with premature greying. There are also individual reports of pigmentation improving after a B12 deficiency was treated.

However, vitamin B12 should not be presented as a universal grey-hair reversal treatment. People with adequate B12 levels may not gain additional pigmentation benefits by taking more.

B12 deficiency may also cause:

• Fatigue
• Weakness
• Numbness or tingling
• A sore tongue
• Balance difficulties
• Memory or concentration changes
• Anaemia

A doctor can arrange appropriate testing when deficiency is suspected.

Folate

Folate works closely with vitamin B12 in cell division and red blood cell production.

Low folate levels have been associated with premature greying in some research, but supplementation has not been proven to reverse ordinary age-related greying.

Folate supplements can also mask some signs of vitamin B12 deficiency, making professional assessment important before taking high doses.

Iron and Ferritin

Ferritin reflects the body’s stored iron.

Low ferritin is more commonly discussed in relation to hair shedding, but some studies have also observed lower ferritin levels among people with premature greying.

Iron supplements should generally only be taken when deficiency has been confirmed. Excess iron can be harmful and does not provide additional hair benefits when iron stores are already adequate.

Copper

Copper contributes to several enzyme systems within the body, including enzymes involved in melanin production.

Because copper participates in pigment biology, deficiency has been investigated as a possible contributor to early greying. Some studies have found lower copper levels in people with premature greying, while others have produced inconsistent results.

Copper deficiency is relatively uncommon in people eating a varied diet. Excessive copper supplementation can cause adverse effects, so it should not be taken indiscriminately.

Vitamin D

Some observational studies have reported an association between lower vitamin D levels and premature greying.

Vitamin D has important roles in bone health, immune regulation and other biological functions. However, evidence does not establish vitamin D as a direct treatment for grey hair.

Treating a confirmed deficiency may support general health but cannot guarantee repigmentation.

Biotin

Biotin is frequently included in hair supplements and contributes to normal macronutrient metabolism.

A severe biotin deficiency can affect hair, skin and nails, but biotin has not been shown to reliably restore pigment to grey hair in people who are not deficient.

Biotin can also interfere with some laboratory blood tests, including certain thyroid and cardiac tests. Tell your healthcare provider about biotin supplements before undergoing testing.

Can Catalase Supplements Reverse Grey Hair?

Catalase is an antioxidant enzyme that helps break hydrogen peroxide down into water and oxygen.

Research has found that grey and white hair follicles may contain increased hydrogen peroxide and reduced catalase activity. This created a plausible biological theory: if excess hydrogen peroxide contributes to pigment loss, increasing catalase might help protect or restore pigmentation.

However, this theory is much stronger than the current clinical evidence.

There is not yet robust evidence showing that ordinary oral catalase supplements consistently reach the hair follicle in an active form and reverse established grey hair.

Important questions remain, including:

• Whether orally consumed catalase survives digestion
• Whether enough active enzyme reaches the relevant follicular tissues
• Whether reduced catalase is a cause or consequence of follicular ageing
• Whether melanocyte stem cells are still available to restore pigment
• Which dose or formulation would be effective

Catalase-containing supplements may be marketed as part of a wider anti-grey formula, but consumers should approach claims of guaranteed colour restoration cautiously.

Bodytonix’s premature greying collection allows customers to compare catalase formulas, nutritional supplements, shampoos and other products marketed for grey hair support.

Do Antioxidants Prevent Grey Hair?

Oxidative stress is involved in the biology of hair ageing, which has led to interest in antioxidant ingredients such as:

• Vitamin C
• Vitamin E
• Glutathione
• Selenium
• Polyphenols
• Green tea extracts
• Resveratrol

Antioxidants contribute to normal cellular protection, but there is currently insufficient evidence that an ordinary antioxidant supplement can prevent or reverse genetically determined greying.

A product showing antioxidant activity in a laboratory does not automatically produce visible hair repigmentation in humans.

Antioxidants may still be included within broader wellness formulas, but grey-hair claims should remain realistic and evidence-based.

Can PABA or Pantothenic Acid Reverse Grey Hair?

Para-aminobenzoic acid, commonly called PABA, and pantothenic acid, or vitamin B5, have a long history of use in products marketed for premature greying.

Some older reports described temporary hair darkening among people taking PABA or combinations of PABA and calcium pantothenate. In many cases, the evidence came from small studies, uncontrolled observations or research conducted many decades ago.

More rigorous modern clinical evidence is lacking.

PABA and pantothenic acid should therefore not be regarded as proven treatments for age-related grey hair. Their inclusion in a formula does not guarantee that natural pigment will return.

Do Anti-Grey Hair Shampoos Work?

Anti-grey shampoos can work in several different ways, depending on the formulation.

Some shampoos are primarily designed to:

• Cleanse the scalp and hair
• Improve moisture and manageability
• Reduce yellow or brassy tones
• Deposit temporary colour
• Complement a broader grey-hair routine

A colour-depositing shampoo may make grey hair look darker, cooler or more even, but this is a cosmetic effect rather than biological repigmentation within the follicle.

Shampoos containing botanical extracts, peptides, catalase or antioxidant ingredients may be marketed as supporting pigment production. Because shampoo is rinsed away after a short contact period, strong claims of permanent colour restoration should be treated cautiously unless supported by appropriate human research.

For complementary cleansing and scalp products, browse Bodytonix’s Shampoo & Scalp Care collection.

Can Lifestyle Changes Slow Grey Hair?

Lifestyle changes cannot alter every genetic or age-related process, but they can support general health and may reduce avoidable sources of cellular stress.

Useful habits include:

Avoid Smoking

Smoking is associated with numerous health risks and has also been linked observationally with premature greying.

Eat a Varied Diet

A varied diet can help provide nutrients required for normal hair growth, pigmentation and antioxidant defence.

Useful food groups include:

• Protein-rich foods
• Vegetables and fruit
• Whole grains
• Nuts and seeds
• Legumes
• Dairy products or suitable alternatives
• Fish, meat or fortified plant-based foods, depending on dietary preferences

Avoid Unnecessary High-Dose Supplements

More is not always better.

High doses of certain vitamins and minerals can cause adverse effects or interfere with other nutrients and medicines. Supplements are most useful when they address a genuine nutritional need.

Manage Ongoing Stress

Stress management cannot guarantee that grey hair will reverse, but it can support sleep, mental wellbeing and general health.

Approaches may include:

• Regular physical activity
• Consistent sleep habits
• Relaxation techniques
• Time outdoors
• Social support
• Professional mental health support when needed

Protect Hair From Damage

Heat, bleach and chemical processing do not usually cause the follicle to stop producing melanin. However, they can make grey hair feel drier, weaker or more brittle.

Gentle hair care may improve the appearance and manageability of grey strands.

Can Plucking Grey Hair Make More Grow?

Plucking one grey hair does not cause several more grey hairs to grow around it.

Each strand grows from its own follicle. Removing one strand does not directly change the pigment production of neighbouring follicles.

However, repeated plucking can irritate or damage the follicle. Over time, this may reduce growth or contribute to local inflammation.

Cutting the grey hair shorter is less likely to damage the follicle.

Can Cutting or Shaving Grey Hair Make It Grow Back Darker?

No.

Cutting or shaving changes the visible hair shaft above the skin. It does not alter the melanocytes or melanocyte stem cells within the follicle.

A newly cut strand may look darker or thicker because it has a blunt edge, but its underlying pigment production has not changed.

How to Choose a Grey Hair Supplement

When comparing products, look beyond dramatic claims on the front label.

Review the Complete Formula

Check whether the product contains:

• Vitamins and minerals
• Catalase
• PABA
• Pantothenic acid
• Botanical extracts
• Antioxidants
• Amino acids or structural hair nutrients

Consider the purpose of each ingredient rather than assuming that a longer formula is automatically better.

Look for Transparent Dosages

Products should clearly state the amount of each active ingredient or provide a complete supplement panel.

Proprietary blends can make it harder to determine how much of each ingredient is included.

Check for Duplicate Nutrients

Using several hair supplements together can lead to duplicated ingredients.

Pay particular attention to:

• Zinc
• Selenium
• Copper
• Iron
• Vitamin A
• Vitamin B6
• Biotin
• Iodine

Excessive intake can cause adverse effects and may sometimes contribute to hair concerns rather than improve them.

Consider Your Individual Needs

A product marketed for premature greying may not address the cause of greying in every person.

Someone with a confirmed vitamin B12 deficiency has different needs from someone whose hair is greying primarily because of genetics and ageing.

Be Cautious of Guaranteed Claims

Avoid products promising:

• Permanent reversal
• Immediate results
• Complete repigmentation
• Guaranteed prevention of all future grey hair
• Results for every user

The biology of hair pigmentation is complex, and individual outcomes vary.

You can compare grey hair supplements and hair care products from established Australian and international brands at Bodytonix.

When Should You See a Doctor About Grey Hair?

Grey hair is usually a normal cosmetic change and does not require medical treatment.

Consider speaking with a GP or dermatologist when greying:

• Begins unusually early
• Develops rapidly
• Appears in distinct patches
• Occurs alongside white skin patches
• Is accompanied by substantial hair loss
• Develops with fatigue, numbness or weakness
• Occurs with unexplained weight changes
• Is accompanied by symptoms of thyroid dysfunction
• Begins after starting a new medicine
• Causes significant concern or distress

Depending on the history and symptoms, a healthcare professional may consider targeted tests for factors such as:

• Vitamin B12
• Folate
• Iron and ferritin
• Thyroid function
• Vitamin D
• Other nutrients or health conditions

Routine testing of every possible vitamin and mineral may not be necessary. Assessment should be guided by diet, symptoms, medical history and clinical findings.

Building a Complete Grey Hair Care Routine

Supporting grey hair is not only about attempting to restore pigment.

A balanced routine may focus on:

• Investigating premature or rapid greying
• Correcting confirmed nutritional deficiencies
• Using gentle shampoos and conditioners
• Supporting moisture and manageability
• Reducing excessive heat and chemical damage
• Choosing colour-depositing products when desired
• Maintaining a varied diet
• Avoiding smoking
• Setting realistic expectations

Grey hair can be healthy hair. Products that improve softness, shine and condition may provide a visible benefit even when they do not alter the pigment produced inside the follicle.

For a wider selection of supplements, shampoos and specialised treatments, explore Bodytonix’s complete Hair Growth & Hair Health range.

Frequently Asked Questions

Can Grey Hair Turn Black Again Naturally?

It can happen occasionally, but it is not common or predictable. Individual hairs have been documented regaining pigment, particularly when an underlying trigger changes. Established age-related or genetic greying is generally much less likely to reverse.

Which Vitamin Deficiency Causes Grey Hair?

No single deficiency causes every case of grey hair. Vitamin B12, folate, iron, copper and vitamin D have each been associated with premature greying in some studies. Testing is preferable to guessing.

Can Vitamin B12 Reverse Grey Hair?

Treating a genuine vitamin B12 deficiency may help in selected cases where the deficiency contributed to pigment loss. B12 supplementation is unlikely to reverse ordinary genetic or age-related greying when B12 levels are already adequate.

Does Catalase Get Rid of Grey Hair?

Catalase has a plausible role because it breaks down hydrogen peroxide, which has been found in increased amounts within grey hair follicles. However, there is insufficient clinical evidence that oral catalase supplements reliably reverse grey hair.

Can Biotin Reverse Grey Hair?

Biotin supports normal metabolism and may be useful when a true deficiency is present. It has not been proven to restore colour to grey hair in people with normal biotin levels.

Can Stress Cause Grey Hair?

Stress may influence the cells responsible for hair pigmentation, and research has linked changes in stress with pigmentation changes in some individual hairs. Stress is unlikely to be the sole cause in every case.

Is Premature Grey Hair a Sign of Poor Health?

Not necessarily. Premature greying is frequently genetic. In some people, it may be associated with nutritional deficiencies, thyroid conditions, smoking or other factors, particularly when accompanied by additional symptoms.

Does Pulling Out Grey Hair Cause More Grey Hairs?

No. Plucking one strand does not change neighbouring follicles. Repeated plucking may damage the individual follicle and is not recommended.

Can Grey Hair Be Prevented?

There is no guaranteed way to prevent genetically determined or age-related greying. Avoiding smoking, eating a balanced diet and treating genuine health problems may help reduce avoidable contributors.

What Is the Best Supplement for Grey Hair?

There is no single product that is best for everyone. The appropriate choice depends on age, diet, health history, existing deficiencies, other supplements and the reason the hair is greying.

The Bottom Line

Grey hair develops when follicles produce progressively less melanin. Genetics and ageing are the most common influences, although oxidative stress, smoking, nutritional deficiencies, thyroid conditions and other health factors may contribute in some people.

Ordinary age-related grey hair cannot currently be reversed reliably. Vitamins, minerals and supplements are most likely to be useful when they correct a genuine deficiency rather than when they are taken as a universal solution.

Catalase, antioxidants, PABA and other ingredients have biological theories or limited research behind them, but none can guarantee permanent repigmentation.

People experiencing unusually early, rapid or patchy greying should consider professional assessment. Everyone else may choose to focus on supporting healthy, manageable hair while maintaining realistic expectations about changes in natural pigment.

Explore Bodytonix’s complete range of grey hair support products in Australia, with supplements, shampoos and targeted hair wellness formulas stocked and dispatched from Sydney.

Sources Reviewed

• The biology of human hair greying – Experimental Dermatology
• Dedifferentiation maintains melanocyte stem cells in a dynamic niche – Nature
• Quantitative mapping of human hair greying and reversal – eLife
• Premature Graying of Hair: A Comprehensive Review
• Premature graying of hair: risk factors and reversibility
• Hydrogen peroxide and oxidative stress in grey hair
• Vitamin B12, ferritin and thyroid function in premature greying
• The effects of smoking on hair health

 

About the Author

This article was prepared by the Bodytonix Editorial Team using published scientific research and recognised health information. Bodytonix is an Australian health and wellness retailer specialising in hair health, longevity, skin health and general wellness products.

This article provides general educational information only and is not a substitute for medical advice, diagnosis or treatment. Speak with a qualified healthcare professional about unusually early, rapid or unexplained greying and before beginning a new medicine or supplement.