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Clinical Study & Key Ingredients

Growth is not an option!
Ingredients get results. That's why we source high quality 100% vegan and plant derieved ingredients with performance and results in mind.


Studies found Argan oil was incredible at protecting the hair from becoming weak & brittle as it lays a protective coat over the strands combatting breakage.


Green tea contains epigallocatechin-3-gallate (EGCG), a major constituent of polyphenols. Recently, it was reported that EGCG might be useful in the prevention or treatment of androgenetic alopecia. Rich in Caffeine which has been studied to boost hair growth and stimulate blood follicles. It’s incredibly nutrient-rich and increase the health hair and prevents shedding.


The tree of life is rich in Iron, Zinc, Vitamin A & B to promote healthy follicles, promote hair growth and reduce hair fall.



Cleanses, softens and conditions the hair. It’s able to remove build up, toxins, dandruff and reduce dryness in the hair.


It’s a natural conditioning herb which helps to soften your strands, make your hair/beard more manageable, reduces hair fall and thinning.


Another natural conditioner backed with antioxidants and antimicrobial properties to boost the health of your scalp and strands. It’s also moisturising and prevents acne around the scalp and skin.


It’s packed with fatty acids and vitamins to restore the health of your strands, protect strands from breaking and shedding while boosting volume and thickness.


Is rich in fatty acids which seal in moisture. This leads to smoother, softer hydrated strands. It’s also repair damaged hair cuticles which can affect length retention and moisture retention

Let me get this straight


What results will i see and when?

The Kai duo is no different to our growth treatments. It is a mere apart of your routine in your growth journey and your best results will come with consistent use and using our rituals during the week.

You should see the support in volume, growth, moisturse and length retention using these products in as little as a month!  

How does it work? 


This shampoo bar is a gentle yet powerful clarifier made to detox, cleanse and renew the scalp and skin so you can get rid of toxins, product build up and dandruff without leaving your hair feeling stripped. It’s packed with DHT blocking ingredients and nutrient dense ingredients like Moringa, Matcha Green Tea, Rhassoul Clay & Argan Oil. It’s made to grow your hair too! Just add water and it will lather so fast… a little also goes a long way, be sure to store it in a dry place to ensure it lasts 25 washes.


This long-lasting conditioning bar is both moisturising and strengthening treatment. Great for deep conditioning, injecting much needed moisture back into the strands with Avocado Butter, Babassu Oil. It also helps to rebuild weak, brittle strands and help your strands retain moisture foe longer with Wheat Protein, Pro Vitamin B5 & Vegetable Glycerin to encourage maximum volume and growth. This will have your strands feeling so soft, tangle-free and thicker.


How do I use the Kai - Wash Day Duo ?

Step 1 - Rain Growth Shampoo Bar

Wet your strands and wet the bar. Either glide the bar through your strands or rub it into your hands to create lather in seconds. Apply on your scalp or beard and work that in to get rid of the dirt, toxins and build up. Rinse and repeat one more time so your scalp, strands or beard is super clean.

Step 2 - Dew Moisturising and Strengthening Deep Conditioning Bar

Once you’ve rinsed out Rain, drench your strands once again in water and wet Dew. Glide that through and work the product in until you start to feel slip on your strands.

Can I use Kai with the other bundles?

Yes! We encourage you to use this alongside your growth treatments so you can maximise your results. Growth lies in your routine and using the right products in a consistent routine is what will get you the results you’re looking for. 

How often do I use it? 

Rain & Dew are both designed to be used on every washday. The amount of times you wash and condition your hair is determined by your hair type. Minimum once a week for all hair types and for straight, wavy hair types I suggest twice a week minimum.

For beards, use twice a week for the best results!

Does it work for hair & beard growth?

Yes! All our products are multi-tasking and work for both hair and beard growth.

We are genderless brand aiming to help any hair type, beard type no matter the age or race.

Can i Use Kai Washday Duo with Minoxidl?

Minoxidil is a harsh chemical treatment. Kai duo is perfectly fine to use with other growth treatments as it is naturally powered by clinically proven plant based ingredients for hair growth and health. You can combine them at your own risk but we won’t recommend it - we'd rather suggest our natural growth treatments.


How to store the washday bars?

It's important after use to store the washday bars are kept in a dry, cool areas. It can be put back into the box, it can also be put into a can container however it has to be dried beforehand. If it is kept in a moist state or around water it will melt away and will not last 25 uses.

Are there any side effects or allergens?

Kai - Washday Duo doesn’t have any side effects or allergens. This duo is safe to use and have been approved by our cosmetic science partners and meet EU safety standards.  

If you do have an allergic reaction due to an unknown allergy to one of our ingredients please discontinue use and alert us immediately

How do the active ingredients work? 

Moringa Leaf Extract - 10x more Iron than spinach, 2x more potassium than banana rich in zinc and other nutrients this African herb is amazing for hair growth, restoring nutrients back into the scalp and strands and helps to reduce hair fall. 

Matcha Green Tea - Rich in caffeine to prevent hair hall and has been studied to treat androgenic alopecia 

Rhasshoul Clay - This lava clay cleanses, conditions and softens the hair helping to remove build, dandruff and reduce dryness to combat brittle strands.  

Argan Oil - Studied to create a protective layer around weak, brittle strands to encourage stronger hair growth and combatting breakage. 

What’s the difference between Kai - Wash Day Duo and Kai - The Ultimate Wash Day Kit

The Duo only includes Rain and Dew.

The Ultimate Wash Day includes Sand, Rain and the choice of Vine or Dew.


How long is shipping ?

A: Processing
Please allow 3-4 working days to prepare & ship

your order

Transit Time: US Shipping
5-7 working days with DHL

UK Shipping
- Next Day Delivery

International - 7-14 working days
depending on location

*All international
customers are responsible for all customs and duty fees that are incurred
during transit*


delivery time
= processing + transit time excluding the

weekends or public holidays

What to do if my tracking number isn't working?

Your tracking number will become live
our courier has scanned your item. However, please feel free to send us an
email at and we can assist you further with any of your

Why We
Love The Kai Washday Duo