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"Best Thickening Conditioner" The Independent

Caffeine Conditioner with Proteins and Vitamins to encourage thicker, stronger and healthier hair. Formulated by experts in the UK using scientifically proven ingredients.

Real People, Real Results

In an independent study, 82% of users said their hair was thicker after using THIX for 28 days.

Functional Conditioner 250ml
💥 Caffeine formula to stimulate follicle growth
💪 Protein packed to strengthen roots
🌱 Vitamin rich to make hair thicker
💚 Made with vegan friendly ingredients
♻️ Plastic-free packaging
🇬🇧 UK made and developed
📦 Free shipping with 2 or more bottles


If it’s thicker hair you’re after, take a look at this. THIX super thick Caffeine Conditioner combines proteins and vitamins that help stimulate follicle growth and, in turn, leave you with thicker, fuller locks.


Caffeine helps to kickstart growth, plant keratin strengthens strands and a cocktail of vitamins C, B3 (niacinamide) and E helps the hair to hold onto moisture, increase blood circulation to the scalp and support healthy hair growth. So a lot of science is packed into one bottle.

Free From
Sulphate-free, ethanol-free, paraben-free, GMO-free, cruelty-free. THIX has not been tested on animals.

This super-powered combo of Protein, Vitamins, and Caffeine is suitable for all hair types. To use, massage into wet hair. Leave on scalp for 3 minutes then rinse.

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How It Works

Caffeine Based

In short, caffeine is really good for our hair. It is scientifically proven to be a natural stimulator of hair follicle growth. Studies of human hair follicles show that caffeine increases the amount of cell energy in them by acting against a protein called phosphodiesterase. The research shows that caffeine combats hair loss by inducing hair cells to produce Adenonsine Triphophate (ATP). It is a molecule that carries energy that helps stimulate the cells to grow. Caffeine has also been shown to increase the protein insulin-like growth factor (IGF1), an important signalling molecule in promoting hair growth. More specifically, caffeine has also been shown to potentially reverse the effects of dihydrotestosterone (DHT). The main hormone involved in common balding.

Protein Strong

Our hair uses proteins to build tissue cells. Natural proteins re-energise hair roots and increase the structural strength of hair follicles making hair healthier, thicker and stronger. Keratin is the dominant protein in hair which makes up for around 90% of the composition. It is scientifically proven to generate hair growth and regeneration. Not only does the THIX formula include natural Plant Keratin derived from corn, soybeans and wheat but also the vitamin Biotin (B7) which stimulates more keratin production and can also increase the rate of follicle growth.

Vitamin Rich

Healthy hair needs nutrients to help cells thrive. Our complex THIX formula is designed to incorporate the benefits of a multitude of vitamins that all help to repair old broken follicles and to make new hair feel thicker and stronger hair. The most dominant is B3 Niacinamide, which improves blood circulation to the scalp. B5 Panthenol maintains moisture in the hair. B6 Pyridoxine supports healthy hair growth and hair revitalisation. Vitamin C promotes hair health, helps reduce hair loss and prevents dry hair and split ends. Vitamin E increases capillary circulation in the scalp which can also help promote hair growth.

Fresh & Clean

Mint AND Eucalyptus

Apart from smelling amazing, mint formulas energize your scalp and strands, leaving your hair as good as new. It's also excellent for your hair health because it cleanses without stripping away your hair's essential oils and color.


Aqua (Water), Cetearyl Alcohol, Behentrimonium Chloride, Cetrimonium Chloride, Betaine, Caffeine, Parfum (Fragrance), Benzyl Alcohol, Hydroxyethylcellulose, Phenoxyethanol, Citric Acid, Propylene Glycol, lsopropyl Alcohol, Hydrolyzed Corn Protein, Hydrolyzed Wheat Protein, Niacinamide, Hydrolyzed Soy Protein, Sodium Starch Octenylsuccinate, Calcium Pantothenate, Maltodextrin, Dehydroacetic Acid, Sodium Ascorbyl Phosphate, Urea, Phytic Acid, Limonene, Benzyl Benzoate, Kigelia Africana Fruit Extract, Pyridoxine HCL, Tocopheryl Acetate, Disodium Phosphate, Leuconostoc/Radish Root Ferment Filtrate, Linalool, Biotin, Citral, Cinnamomum Zeylanicum Bark Extract, Ginkgo Biloba Leaf Extract, Salvia Sclarea (Clary) Extract, Silica. 

How to use:

  • Conditioner


Massage into wet hair.


Leave on scalp for 3 minutes then rinse.


For re-energised hair, use daily.


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Reusable Pump

We recommend adding a reusable bottle pump to your first order to dispense THIX easily, especially the conditioner.

Please reuse the pump with your next order to cut down in single-use plastic waste.