Foods that can help with hair health and hair growth
Zara Inuwa
Hair is made primarily from protein, so a diet low in protein produces thinner, weaker strands. Iron, biotin, zinc, vitamin D, omega-3 fatty acids, and vitamins A and C all play direct roles in follicle function and hair health. The best diet for hair growth includes oily fish, eggs, lean meat or plant proteins, leafy greens, nuts, seeds, and avocados. Topical products support the strand from the outside. Good nutrition supports the follicle from the inside. Both together give hair the best possible environment to grow.
Diet plays a vital role in hair health and hair growth, as healthy hair also comes from within. The majority of hair follicles are made from protein, so hair needs protein to grow and repair. Hair also needs essential vitamins and minerals to remain healthy. Increasing your protein intake and eating a balanced diet can contribute to healthy hair growth alongside your topical care routine.
The foods below cover all the key nutritional categories that support hair growth: protein, iron, omega-3 fatty acids, biotin, zinc, and essential vitamins. For context on how internal nutrition connects to the complete hair care picture, the hair care and breakage prevention guide covers both internal and external habits that support healthy hair.
Protein-Rich Foods for Hair Growth
Hair is made primarily from keratin, a structural protein. Every strand that grows from the follicle is built from protein your body has processed from food. A diet consistently low in protein leads to thinner, weaker strands that break more easily and grow more slowly. The following foods are among the best protein sources for hair health.
Fish
Oily fish such as salmon, mackerel, and tuna provide two things hair needs simultaneously: high-quality protein and omega-3 fatty acids. Omega-3 fats are incorporated into the cell membranes of the scalp skin and hair follicles, supporting follicle health and reducing the scalp inflammation that can slow hair growth. Fish is one of the most complete dietary sources for hair health because it delivers both the structural building blocks and the anti-inflammatory fats in one meal. Omega-3 supplements are also available if oily fish is not a regular part of your diet.
Shrimp
Shrimp is a particularly well-rounded hair food because it contains protein, iron, zinc, vitamin D, and B vitamins in a single source. Iron helps red blood cells deliver oxygen to the hair follicles, which directly supports the growth cycle. Zinc supports the oil-producing glands around the follicle and helps repair hair tissue. Vitamin D plays a role in creating new hair follicles. B vitamins, particularly biotin, stimulate keratin production which is the protein that forms each hair strand.
Meat
Meat has a high protein and iron content. Iron is a mineral that helps red blood cells deliver oxygen to the hair follicles, which supports the active growth phase of each strand. Iron deficiency is one of the most common nutritional causes of hair thinning and shedding in women, particularly those with heavy periods. Red meat provides haem iron, which is absorbed more efficiently by the body than the non-haem iron found in plant sources.
Eggs
Eggs have a high protein and biotin content. Biotin is a B vitamin that helps stimulate keratin production, which encourages hair growth. It also supports the infrastructure of the hair follicle. Egg yolks also contain vitamin D, which is linked to follicle creation, and healthy fats that support scalp health. Eggs are one of the most accessible and affordable complete hair foods and work just as effectively whether eaten boiled, scrambled, or poached.
Soybeans
Soybeans provide two hair benefits. They are a complete plant protein, meaning they contain all essential amino acids needed to build keratin. They also contain spermidine, a naturally occurring compound that has been shown in research to help extend the active growth phase of the hair cycle, meaning each follicle spends more time actively producing a strand before entering the resting and shedding phase.
Nuts
Nuts are a good source of protein and also contain essential vitamins that help promote hair health and hair growth. Walnuts are particularly rich in omega-3 fatty acids. Brazil nuts are one of the best dietary sources of selenium, a mineral that plays a role in the production of thyroid hormones which regulate the hair growth cycle. Almonds and cashews provide zinc, which supports follicle health and tissue repair.
Seeds, Plant Foods, and Healthy Fats for Hair
Seeds
Sesame seeds, flaxseeds, and chia seeds are rich in omega fatty acids which help promote hair growth and hair health. Flaxseeds and chia seeds are particularly high in alpha-linolenic acid (ALA), a plant-based omega-3 that the body converts to the same anti-inflammatory fats found in oily fish. Pumpkin seeds are also a strong source of zinc and iron. Sunflower seeds provide vitamin E, which supports scalp circulation and protects follicle cell membranes from oxidative damage.
Avocados
Avocados contain vitamin E and essential fatty acids that are needed for hair growth and hair health. Vitamin E is an antioxidant that neutralises free radicals which can damage hair follicles. It also improves scalp circulation and helps maintain the moisture balance of the scalp. The healthy monounsaturated fats in avocados support the absorption of fat-soluble vitamins A, D, and E, making avocado a helpful addition to meals that include other hair-nourishing foods.
Vegetables and Iron-Rich Foods for Hair Growth
Spinach
Spinach is an excellent source of iron, vitamin C, and vitamin A, all of which are essential in encouraging hair growth. Vitamin A helps produce sebum, the natural oil that the scalp produces to moisturise and protect both the scalp skin and the hair shaft. Vitamin C assists with iron absorption and is used by the body to produce collagen, a structural protein that strengthens the hair and prevents it from becoming brittle. Pairing spinach with a vitamin C source such as lemon juice maximises the iron absorption from each meal.
Sweet Potatoes
Sweet potatoes are an excellent source of beta-carotene, which the body converts to vitamin A as needed. Vitamin A helps the skin glands produce sebum, which supports scalp health and keeps hair moisturised from the root. Unlike supplemental vitamin A, which can be harmful in excess, the beta-carotene in sweet potatoes is converted only as the body needs it, making it a safe and effective dietary source.
Why Internal Nutrition and External Care Work Together
No topical product, however well formulated, can compensate fully for nutritional deficiencies. The hair follicle depends on nutrients delivered through the bloodstream. When key nutrients are consistently low, the follicle produces thinner, weaker strands or enters the resting phase earlier than it should. External products can improve the condition of the hair shaft, reduce breakage, and support the scalp environment, but they cannot supply the amino acids and micronutrients the follicle needs internally to build strong, healthy hair from the root.
The most effective approach to hair health combines consistent nutrition with a good external routine. The scalp oil for hair growth guide covers the external side of follicle support and how regular scalp oiling and massage complement the internal nutrition your food provides. The hair growth journey guide shows how this combined approach works in practice over time.
Supporting Hair Nutrition With the Superfood Hair and Scalp Elixir
For busy lifestyles where a consistently balanced diet is not always achievable, targeted supplementation can fill the nutritional gaps that affect hair health. The Superfood Hair and Scalp Elixir is formulated to support hair health from within, providing vitamins and minerals that many people in the UK are deficient in, including vitamin D, which is difficult to obtain from food alone during British winters. The elixir is designed to complement dietary intake rather than replace it, and works best when used alongside the whole-food nutrition described above.
PCH natural hair care: external scalp support that works alongside internal nutrition for the most complete approach to hair health and growth
External Scalp Support: Rosemary Ayurvedic Oil
While food nourishes the follicle from within, the Rosemary Ayurvedic Oil supports the follicle environment from the outside by stimulating scalp circulation. Improved blood flow at the scalp means the nutrients your diet provides are delivered more efficiently to each follicle. Applied with a firm scalp massage two to three times per week, it supports the follicle bed in making the most of the nutritional support your diet and supplementation provide internally. For the full technique and what to expect, the scalp health guide covers scalp massage and circulation in detail.
Rosemary Ayurvedic Oil: applied with scalp massage to stimulate circulation and support efficient delivery of nutrients to each follicle, complementing a hair-healthy diet from the outside
What Our Customers Say
The following review is from a verified customer on The Pure Curls House website.
“’ve been using this oil for a month an 2 weeks and to see a massive difference already is amazing! My hair feels thicker & softer ... Am so happy with the results already and I can't wait to see more results with this oil 🍾 thank you curls & lengths for helping me on my healthy hair journey 💗 highly recommend.”
Rosemary Ayurvedic Oil
Frequently Asked Questions: Foods for Hair Health and Growth
Frequently Asked Questions
What is the best food to eat for hair growth?
No single food is best, but eggs, oily fish, spinach, nuts, and seeds cover the widest range of hair growth nutrients in a compact way. Eggs provide protein and biotin. Oily fish provide protein and omega-3 fatty acids. Spinach provides iron, vitamin C, and vitamin A. Including all of these across the week gives the follicles a consistent supply of the nutrients they need to produce strong, healthy hair.
Which vitamin deficiency causes hair loss?
Iron deficiency is the most common nutritional cause of hair shedding and thinning, particularly in women with heavy periods. Vitamin D deficiency is also strongly linked to hair thinning. Zinc and biotin deficiencies can reduce hair growth rate and strand thickness. A blood test from your GP can identify specific deficiencies so that supplementation is targeted rather than guesswork.
Does protein really help hair growth?
Yes. Hair is made primarily from keratin, a structural protein. Every strand grown by the follicle is built from amino acids derived from dietary protein. A consistently low-protein diet leads to thinner, weaker strands that break more easily and may trigger the follicle to enter the resting phase early, increasing shedding. Including a quality protein source at each meal supports healthy hair production.
Are there vegan foods that help hair growth?
Yes. Soybeans and legumes provide complete or near-complete plant protein. Spinach, lentils, and pumpkin seeds provide iron. Chia seeds, flaxseeds, and walnuts provide omega-3 fatty acids. Avocados provide vitamin E and healthy fats. Fortified plant milks and cereals provide vitamin D and B12. A well-planned vegan diet can fully support hair health. Those on plant-based diets may benefit from checking iron, vitamin D, and B12 levels regularly.
How long does it take for diet changes to affect hair growth?
Hair grows approximately one to one and a half centimetres per month on average. The follicle responds to improved nutrition within four to eight weeks, but the visible effect on the hair length and condition takes three to six months of consistent dietary improvement to become fully apparent. Improvements in scalp health and reduced shedding are often noticeable sooner, within six to eight weeks of better nutritional intake.
Healthy hair starts with what you eat. Protein, iron, biotin, omega-3 fatty acids, zinc, and vitamins A, C, D, and E all play direct roles in follicle function and strand quality. The foods above, particularly oily fish, eggs, spinach, nuts, seeds, and avocados, cover all these categories and give hair the internal nutritional support it needs to grow at its best. Combine a hair-healthy diet with a consistent external care routine and targeted supplementation when needed, and you create the most complete possible environment for healthy hair growth. For the full picture on what else supports curly hair growth, visit the how to grow curly hair longer UK guide or explore the PCOS and hair loss guide if hormonal factors are also a concern. Take the curl quiz for a personalised product recommendation matched to your hair type.
About The Pure Curls House
The Pure Curls House is a UK curly hair brand based in Bury, Greater Manchester. Every product in the range is sulfate-free, silicone-free, and formulated with plant-based ingredients. The range includes both topical products that support scalp health and follicle circulation externally, and the Superfood Hair and Scalp Elixir for internal nutritional support, providing a complete approach to hair health from root to tip.