The DUOLIFE Keratin Hair Complex product is covered by the Satisfaction Guarantee Programme – we guarantee your satisfaction with the product or your money back! This is a confirmation of the product’s quality, which we are confident in, as well as evidence of the fair and transparent principles we follow at DUOLIFE.

DUOLIFE Keratin Hair Complexis a food supplement in liquid form, with active ingredients that, among other things, help maintain hair, nails and skin in optimal condition^a, support skin cleansing^b, and help protect cells from oxidative stress^c.

DUOLIFE Keratin Hair Complex is a liquid food supplement composed of carefully selected, naturally sourced ingredients that form a unique composition consistent with the principles of synergism. DUOLIFE Kertain Hair Complex is a blend of fruit juices, formula from black rice and prickly pear flower extracts, solubilised keratin, organic pea shoot extract and many other valuable botanical extracts.

The DUOLIFE Keratin Hair Complex dietary supplement contains guava fruit purée, raspberry fruit juice, black rice and Opuntia ficus-indica flower extract formula, amla fruit extract, organic pea shoot extract, solubilised keratin, nettle leaf extract, grape seed extract, and common horsetail extract.

^a) Silica found in common horsetail helps maintain the optimal condition of hair, nails and skin. (ID 3911) 

^b Nettle supports skin cleansing. (ID 2766)  

^c Vitamin C helps to protect cells against oxidative stress.

The minerals in nettle help maintain hair, nails and bones in optimal condition. (ID 2821)  

Grape seeds support venous circulation. They help to protect against free radicals. (ID 2139)

Vitamin C contributes to normal collagen formation for the normal function of blood vessels, bones, cartilage, gums, teeth, and skin.

Vitamin C contributes to the regeneration of the reduced form of vitamin E.

Product advantages

---

Discover the ingredients of DUOLIFE Keratin Hair Complex

---

Guava fruit purée – guava fruit is a source of numerous antioxidants, such as vitamin C, carotenoids (beta-carotene and lycopene), and polyphenols (ellagic acid, quercetin, and anthocyanins); furthermore, they contain significant quantities of fibre, tannins, essential oils, vitamins and minerals.

Raspberry fruit extract – raspberries are a source of polyphenols (flavonoids, anthocyanins, phenolic acids), vitamins (A, C, E, and group B), minerals, organic acids, sugars, fibre, and other.

Black rice and Opuntia ficus-indica flower extract formula standardised to provide anthocyanins – the combination of black rice and Opuntia ficus-indica flower extract is the subject of a patent¹. Black rice is a type of rice commonly grown and consumed for a long time in Southeast Asian countries. It is rich in nutrients and bioactive compounds, such as anthocyanins, which are responsible for its dark colour. Opuntia ficus-indica flowers, not only contain vitamins (A, C, E, B group), but are also a source of calcium, magnesium and fibre. In addition, the flowers also contain valuable alkaloids and flavonoids.

¹ Bonina A.F., Bonina C. Compositions based on plant extracts for inhibition of the 5-alpha reductase. WO 2015/132755 Al. Sept. 11, 2015.

Amla fruit extract – amla (Indian gooseberry) is a valuable source of vitamin C. In DUOLIFE Kertain Hair Complex this extract is standardised for 70% vitamin C content.

Vitamin C:
- contributes to normal collagen formation for the normal function of blood vessels, bones, cartilage, gums, skin, and teeth;
- helps to protect cells against oxidative stress;
- contributes to the regeneration of the reduced form of vitamin E.

Organic pea shoot extract – pea shoots are rich in nutrients. They contain, among others, protein, carbohydrates, vitamins (C, A, E, B group), minerals (potassium, phosphorus, calcium, magnesium, copper, and zinc) and fibre.

Solubilised keratin – keratins are a group of fibrillary, water-insoluble proteins produced by keratinocytes in the epidermis. They are the main structural component of hair and nails. Keratin contains a large share of sulphur-containing amino acids (cysteine and cystine), forming so-called disulphide bridges, so it is resistant to mechanical and chemical agents. Keratin is an inedible protein, it is not absorbed from the gastrointestinal tract, therefore, in an oral form, products of its degradation, containing valuable amino acids (solubilised or hydrolysed keratin, contrary to keratin it is soluble in water). The solubilised keratin used in DUOLIFE Kertain Hair Complex was obtained in a patented process of controlled hydrolysis of sheep wool, maintaining its original amino acid profile. Amino acids found in the product are absorbed after oral administration and represent a building component used by the human body to create natural keratin.

Nettle leaf extract – nettle is a valuable source of silica (silicon), but also many other minerals (magnesium, calcium, iron, potassium). Moreover, nettle leaves include such substances as: chlorophyll, xantophyll, carotene, tannins, vitamins (C, K and B2, pantothenic acid), as well as flavonoids (kaempferol, quercetin, rutin, isorhamnetin).

Nettle supports skin cleansing. (ID 2766)

The minerals in nettle help maintain hair, nails and bones in optimal condition. (ID 2821)

Extract from grape seeds standardised for 95% polyphenol content – apart from sugars, proteins and lipids, grape seeds contain also 5–8% of polyphenols. Polyphenols found in the seeds include catechins, proanthocyanidins, resveratrol and phenolic acids.

Grape seeds support venous circulation. They help to protect against free radicals. (ID 2139)

Common horsetail extract – horsetail plant contains numerous valuable active substances, including flavonoids (including derivatives of luteolin, apigenin, quercetin and kaempferol), phenolic acids, minerals, including silicic acid (ca. 66%), soluble silicon compounds, potassium, magnesium and aluminium salts.
Silica found in common horsetail helps maintain optimal health of the hair, nails and skin. (ID 3911)

See frequently asked questions:

---