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HairFlex — leave-in hair serum
A lightweight leave-in serum that supports fuller-looking, vital hair day after day.
€39
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Home · Hair · Kossalin
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Hair
Kossalin — hair strengthening shampoo
4,7 / 5 · 137 reviews
€39
A daily-care shampoo that helps hair look fuller and stronger while leaving the scalp feeling fresh and comfortable.
Delivery in 1–3 working days
30-day money-back guarantee
- Helps maintain a clean and refreshed scalp
- Hair visually looks fuller and stronger
- Contributes to softness and easier combing
- Supports care of roots and lengths without drying
- Leaves a feeling of freshness after every wash
How cash on delivery works
Three steps to your door
1Order onlineFill in a short form — name, phone and address. No account, no card.
2We confirm by phoneWe call you within 24 hours to confirm your order and arrange delivery.
3Pay the courierYour parcel arrives in 1–3 working days. You pay in cash only when you receive it.
Ingredients
What's inside
| Ingredient | Amount | Role |
|---|---|---|
| Caffeine | 0.2% | supports refreshed scalp care |
| Biotin | 150 mcg | contributes to a well-groomed look of the hair |
| Panthenol (provitamin B5) | 1% | helps retain moisture and softness |
| Niacinamide | 0.5% | for a well-cared-for look of the scalp |
| Arginine | 0.3% | supports the feeling of strength in the hair fibre |
Apply to wet hair, massage gently into the scalp and spread along the lengths, leave on for one to two minutes and rinse with lukewarm water, using it three to four times a week for best results.
Customer experiences
What people who tried it say
DK
Daniel K.Manchester
After a few weeks my hair looks fuller and is much easier to comb. The scent is discreet and my scalp feels pleasantly refreshed.
Verified purchase
ER
Elena R.Valencia
I like that it is not harsh and that my hair stays soft. Paying the courier on delivery was the simplest option for me.
Verified purchase
TB
Tomas B.Prague
I use it regularly and my hair looks better cared for and shinier. The parcel arrived quickly and in perfect condition.
Verified purchase
Frequently asked questions
Everything you want to know
Is it safe to use?
Kossalin is a cosmetic product for external use, formulated for everyday care. If you have a sensitive scalp or a known allergy to any ingredient, check the ingredient list first and consult a dermatologist if needed.
How do I pay?
You pay cash on delivery, directly to the courier when your parcel arrives. No card and no advance payment are required.
How long does delivery take?
Delivery usually takes two to five working days depending on your region, and the courier contacts you before dropping off the parcel.
Which hair types is it suitable for?
It is suitable for all hair types, including coloured and finer hair that needs a feeling of fullness.
How often should I use it?
For the best feeling, use it regularly, three to four times a week, as part of your normal washing routine.
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Your order
Order Kossalin — cash on delivery
Choose your package and enter your delivery details. You pay only when the parcel arrives at your address.