The best natural supplement without additives with keratin for hair, skin & nails

Keratin is a substance that has many important functions in our bodies. As important as keratin is for the skin, hair and nails, it is equally important for the other organs of the body to function optimally.

Keratin is a protein found in epidermal tissues, such as skin, nails, and hair, and it is keratin that helps provide strength, structure, and elasticity to protect against damage and trauma. For that reason, keratin has been proven to have a positive role in both beauty and health.

Keratin helps form hair, nails and the outer layer of the skin (epidermis). It helps support your skin, heal wounds and keep your nails strong and your hair healthy.

What symptoms do you get if you lack keratin?

Your skin, hair and nails are made up of proteins such as collagen and keratin. When your body can't make these proteins, you can have brittle or thin hair, dry and flaky skin, and deep ridges in your nails.

A keratin supplement is intended to strengthen your hair, keep your skin healthy and contribute to healthy nails. There are many types of hair, skin and nail supplements on the market today, and keratin is definitely a supplement worth implementing into your daily routine.


Dietary supplement with keratin for hair, skin and nails


Keratin is an insoluble protein found in epidermal tissues, such as skin, nails, and hair, and it is what helps give them strength, structure, and resilience to protect against damage and trauma. For that reason, keratin treatment has shown to have a positive role in our beauty and health. That’s important for many reasons. One, it helps improve your overall glow, as we all know how much skin, hair, and nails can have an effect on how we look. Best of all, you don’t have to think of the protein as just keratin for hair, but other things as well. As a matter of fact, keratin has also been shown to be a strong aid when it comes to wound healing. 

keratin supplement is meant to strengthen your hair while creating shine, and make your nails more stronger. There are many types of hair and nail supplements on the market today, and keratin is defently one supplement to consider.



While keratin has been found in internal organs and has a role in cell movement, it is primarily associated with hair, skin and nails:


  • HAIR: Keratin is what makes up the hair shaft. Because it is the foundation of hair, you will often find products like keratin hair treatment and keratin shampoo/conditioner. Why do we need to boost keratin? As we age, we experience a decline in the production of keratin. In chemical terms, that weakening leads to the deterioration of stability and flexibility in the hair shaft (4). In look-in-the-mirror terms, that makes your hair susceptible to dryness and breakage, especially when using brushes or styling products.
  • NAILS: When you lose keratin (a natural part of aging), that can cause your nails to become brittle, discolored (yellow, gray, or dull), as well as lead to splitting or cracking (5)(6). In addition, your nail can lose keratin for other reasons, such as change in circulatory system (meaning nutrients may not be able to get to the nails, exposure to chemicals and cosmetics, and repetitive cycles of wetting and drying (7)(8).
  • SKIN: Your skin is your biological raincoat. And the reason why your skin is waterproof? Keratin. The strong and flexible fibers make your skin strong against tearing and penetration (9)(10), and it’s what also makes your skin supple and flexible (that’s because it also helps you retain the water you do have to give your skin that glowing appearance). As part of the normal aging process, keratin production decreases, which is what can result in dry and dull skin, which can cause itching and irritation (11).



Besides giving strength and structure to your hair, nail, and skin, keratin also can act as an aid to healing wounds. It has been found to help aid healing in superficial cuts, surgical wounds, leg ulcers, diabetic foot ulcers, first- and second-degree burns, as well as skin grafts (12). It does this by helping to stimulate cell growth and getting healthy cells to the affected area (13).

One animal study shows that bandages using keratin sped up healing and had a better outcome with scars, and another study showed that keratin helped the wound have a “better-organized structure of regenerated tissue (14)(15).

How does it work? Keratin dressings release peptides (which are chains of protein) into the wound. These activate skin cells in the wound bed that forms the epidermis and produces keratin; that then stimulates them to proliferate and heal the wound with regenerated tissue by stimulating fibroblasts, which produce collagen and elastin—two components that makeup skin (16). Some examples of treatments include keratin-rich gels or ointments, or keratin matrix dressing for wounds that produce fluid, like blisters (17).



One way to think about keratin treatment at home is through supplementation. A survey of health professionals found that 66 percent of 300 dermatologists recommended dietary supplements to patients for skin, hair, and nail health; 79 percent of them personally used supplements (18).

Extracted from New Zealand sheep’s wool, Cynatine® HNS is an ingredient in supplements and beauty products that contains solubilized keratin in a highly bioavailable, peptide form (19). Cynatine® HNS’s high bioavailability makes it capable of delivering keratin to our hair, skin, and nails (20). A look at the keratin treatment before and after will give you a glimpse into how it can work.

In one study, dermatologists gave 500 mg keratin supplements daily, containing Cynatine® HNS, to 50 women. These women were tested on measured hair loss, hair growth, hair strength, hair luster, and amino acid composition, as well as nail strength and appearance all, compared to a placebo group (21).

The results showed:

  • 17 percent improvement in hair strength after 30 days
  • 39 percent improvement in hair strength after 60 days
  • 47 percent improvement in hair strength after 90 days
  • 80 percent had an improvement in nail strength, smoothness, and whiteness after 90 days


Another study showed improvement in skin moisture, smoothness, and elasticity after 90 days of keratin, and they showed an 11 percent decrease in wrinkle depth after 90 days (22).




Eating foods rich in protein provides your body the amino acids it requires to produce keratin. Some such protein-rich foods are fish, red meat, pork, chicken, milk, eggs, and yogurt. Plant based foods which are rich in protein are nuts, beans, quinoa and nut-butters. Majority of the adults require 2-3 servings of foods rich in protein per day to meet their daily needs of protein.



You should consume foods that contain lots of vitamin C. The absorption of plant based protein is enhanced by vitamin C; hence, eat vitamin C containing foods when you are eating plant based protein. Vitamin C rich foods are brussels sprouts, broccoli, peppers, kale, papaya, grapefruit, guava, pineapple, oranges, lemons and strawberries. Vitamin C is an antioxidant and boosts the growth of hair and health of hair, skin and nails (Vitamin C is important for the collagen production.).



Consume fatty fish several times in a week. Mackerel, salmon, herring, sardines, tuna and trout are rich in omega-3 fatty acids which help the body produce keratin. 



The production of keratin is also controlled by vitamin D. It regulates the development and growth of keratinocytes. It also regulates the transition of keratinocytes into corneocytes, which are the keratin-rich, dead cells present on the surface of the skin. Vitamin D accompanied by corticosteroids, also helps in the treatment of psoriasis, a skin illness that has excessive production of keratin.

Vitamin D is provided by eating tuna, salmon, milk, mushrooms, eggs and oatmeal. You can also combat a deficiency of vitamin D by getting moderate exposure to the sun.



Biotin is required for the metabolism of amino acids which produce keratin. It is usually recommended for the strengthening of nails and hair. Foods rich in biotin are beans, nuts, cauliflower, mushrooms and whole grains. It is also present in cooked yolks of eggs. However, raw egg whites contain a protein, which interferes with the absorption of biotin. Since biotin is soluble in water, it can’t be stored in your body. Moreover, it can be lost from the foods while cooking, where cooking involves direct contact of food with water, such as boiling.



Synthesis of keratin requires vitamin A. Vitamin A is present in foods such as orange vegetables and fruits such as sweet potatoes, pumpkin, raw carrots, cantaloupe and butternut squash. Cooked greens such as kale, collards and spinach are also rich sources of vitamin A. This vitamin is fat-soluble; hence, its absorption only takes place when it is eaten with some fatty food. This also implies that excessive vitamin A gets stored in your body.



Consume foods rich in zinc, including crab, oysters, turkey, pork tenderloin, chicken, veal, wheat germ, chickpeas and peanut butter. Zinc facilitates growth of tissues and hair and helps in repairing and maintaining the oil glands surrounding the hair follicles.



Increase your consumption of B vitamins. They enhance production of red blood cells that carry oxygen and nutrients to your hair follicles, growing hair and scalp. Foods rich in vitamins B12 and B6 are trout, wild salmon, shellfish, bananas, lentils, white potatoes with skin, fortified cereals (whole grain), garbanzo beans, chicken breasts, pork tenderloin and lean beef. Foods rich in folate are spinach, oatmeal, fortified cereals (whole-grain), parsnips, beets, okra, broccoli, soybeans and black-eyed peas.



Question: What is keratin?

Answer: Keratinocytes are living cells present in your skin, which produce a protective layer to provide flexibility and strength to the skin, to prevent excessive outflow of water and to keep external materials out of the body. The protein strand that makes this layer is tough and shaped like a triple-helix and is referred to as keratin. It is the primary ingredient present in hair, nails, skin and enamel of tooth. Keratin can also be found in your internal organs and glands. Keratin is a protective protein, less prone to scratching or tearing than other types of cells your body produces.

Keratin can be derived from the feathers, horns, and wool of different animals and used as an ingredient in hair cosmetics. Since keratin is the structural building block of your hair, keratin supplements, products, and treatments can help strengthen your hair and make it look healthier and more beautiful.

The technical keratin definition is that it is an insoluble protein found in the epidermal tissues of vertebrae (1). Keratin proteins are tough and fibrous; that’s because they form the structural framework of the cells that line the surfaces of organs, canals, and cavities (these are called epithelial cells). Keratinization is the process in which cells from under the skin convert into hair and nails.


Question: In what food can I find the protein keratin?

Answer: Keratin is not naturally found in foods that we eat, but eating foods rich in certain vitamins and protein can increase the production of keratin and support the growth of skin, hair and nails.


Question: Is there any food that can boost keratin levels in the body?

Answer: Yes! This kind of food can boost your keratin levels in the body:

  • Food rich in proteins
  • Food rich in vitamin C
  • Food rich in omega-3 fatty acids
  • Food rich in vitamin D
  • Food rich in biotin (Vitamin B7)
  • Food rich in vitamin A
  • Food rich in zinc
  • Food rich in B-vitamins


Question: CELLOPTIMUM´S dietary supplements with keratin contains keratin from sheep wool - how are the sheep treated?

Answer: For your information we have a movie that explains how the sheep lives and how the wool is used! The sheeps live a happy life outside, happy sheeps gives the best wool!


Question: What benefits does keratin have for me?

Answer: The benefits of keratin for you in each dieatary supplement are listed below:




  • Increases volume, shine & radiance of the hair
  • Strengthens & improves the primary composition of hair
  • Significantly decreases hair loss
  • Stimulates & accelerates regrowth of healthy hair


  • Strengthens, protects & repairs skin
  • Increases the firmness & tones skin
  • Reduces wrinkles, moistures & softens skin
  • Reinvigorates glow & radiance


  • Spectacularly fast benefits for healthy nails
  • Improves & strengthens the resilience & appearance of nails
  • Reduces brittleness of nails




  • Protects skin against UV rays by enhancing its natural protection
  • Increases skin pigmentation & tanning by stimulating melanogenesis
  • Intensifies, accelerates & prolongs the effect of tanning
  • Regenerates the epidermis




  • Keeps control of emergin gray hairs
  • Stimulates melanogenesis & restores natural hair color
  • Restores healthy hair & vitality
Produced by: Wikinggruppen

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