Learn about our obsessively-researched ingredients.

Science and research

At HAIRTWO, it is very important that all of our ingredients and products are the best they can be, to ensure optimal performance and, most importantly, to ensure that our customers’ safety is not compromised. Our products are developed by qualified French biochemists who combine proven and active ingredients of the highest quality to create effective hair growth products.

How do HAIRTWO products promote growth?

Hair roots, or follicles, go through a three-stage life cycle. It begins with a phase of rapid growth and hair shaft formation, known as the anagen phase. This is followed by regression, characterised by apoptosis or cell death. Finally, the follicle ‘rests’ in the telogen phase, and then the process starts again. Typically, the percentage of follicles in the telogen phase varies between 5 and 15%. An increase in this percentage leads to excessive hair loss or hair thinning

Hair thinning and permanent hair loss is caused by follicular miniaturisation. This means that the follicles that produced healthy hair during the anagen phase start to produce weaker and thinner strands. This process disrupts the growth cycle, making the hair appear sparse. Ultimately, this can lead to brittle short strands and shrunken follicles, which leads to permanent hair loss.Our products contain ingredients that help your hair to stay in the Anagen (a more sophisticated word for growth) phase longer.


Hair loss starts when the skin’s papilla cells become inactive, so the solution is to reactivate them. CAPILIA LONGA PPF can induce the epigenetic restoration of the hair follicle, reactivating the activity of these latent dermal papilla cells and stimulating the regeneration of the hair follicle to produce new hair.

The main benefit of caffeine is that it can help stimulate hair growth from the roots during the initial stages of hair growth. It acts on the hormone DHT, which causes hair loss. DHT can interfere with the vitamins, proteins and minerals that help hair follicles to grow. Caffeine combats this by stimulating hair cells to produce more ATP, which is the energy that fuels hair growth.

Regardless of the brands of keratin shampoo, keratin shampoo is not like regular shampoo, as it goes far beyond the capabilities of the latter. Keratin smoothing shampoo cleanses the hair and removes build-up, but at the same time it strengthens the hair by strengthening the hair cuticles, which make up each hair shaft. And if you follow it with a smoothing conditioner, your hair will feel softer and smoother.

Biotin shampoos not only stimulate natural hair growth, but also help fight dryness, breakage and hair loss. Usually used in combination with other natural ingredients, biotin shampoo and conditioner help to thicken hair and stimulate new hair growth.

One review of 7 studies found that vitamins and shampoos containing saw palmetto improved hair quality by 60%, increased the total number of hairs by 27% and increased hair density in 83% of people with hair loss.

Argan oil can moisturise the hair and scalp and protect the hair from daily damage. By reducing hair breakage and split ends and maintaining a healthy scalp, argan oil can help prevent hair loss for thicker and fuller hair.

Coconut oil can be beneficial for hair and scalp. When used as a hair mask and hair care product, it can help moisturise and strengthen the hair. It can help prevent dry, flaky scalp and dandruff, as well as split ends and hair breakage.

Rosemary is a medicinal herb used to treat a wide range of ailments, including skin irritations and hair loss. Rosemary oil is believed to have strong anti-inflammatory properties that promote healing of the skin and scalp. Rosemary oil has been found to improve hair growth in certain cases of hair loss including alopecia areata, androgenetic alopecia and psoriatic alopecia. Indeed, a comparative study investigating the effects of rosemary oil and minoxidil (the main ingredient in hair loss treatments such as Rogaine) on hair growth found that “no significant differences were found between the study groups”. In fact, after six months, hair growth was similar in both groups. However, the rosemary oil group had less scalp itching.

As you know that collagen is found in many tissues in the body, you probably won’t be surprised to learn that it’s also found in hair. It is essential for maintaining hair strength and elasticity, and a reduction in collagen can lead to breakage and excess hair loss.This is especially true for people in their 30s, as this is when natural collagen levels start to decline, which can be particularly damaging to hair.

Aloe vera can promote pH balance in hair, scalp and skin. This is very important for the health of our body and unfortunately many scalp problems are caused by pH imbalances. Incorporating aloe vera into your regime will definitely be beneficial.

Many people use castor oil as a natural hair treatment. This is because castor oil has moisturising properties that can help lubricate the hair shaft, increase its flexibility and reduce the likelihood of breakage.

Vitamin E in flaxseed oil helps treat hair loss and stimulates new hair growth. Lignans act as powerful antioxidants that can help grow back healthier and stronger hair. Flaxseed oil used in hair products prevents dandruff and nourishes the scalp from the inside, thus alleviating the appearance of dandruff.

Shea butter contains vitamins A and E and essential fatty acids, which are believed to give hair moisture and shine. Its non-fat characteristic makes it an excellent moisturiser. It softens dry, brittle hair and repairs split ends.

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women’s hair grew thicker, stronger and softer.

women had better hair quality and felt happier.

women agreed that their hair looks healthier.

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