Description
Add a supplement course to your hair routine with the Granions Pro Keracys supplement. This 4-in-1 food supplement combines several ingredients in a single course. It is designed first for women.
Its formula combines maidenhair fern and biotin. It also contains keratin, L-cystine, zinc, selenium and vitamins B6, B9, B12 and C. Safflower oil provides fatty acids. The Granions Pro Keracys supplement comes from a French laboratory found in pharmacies.
The box contains 90 units. Follow the dose stated on the box: several doses a day are planned. The Granions Pro Keracys supplement is taken as a course of several months. It does not replace a varied diet. Ask a healthcare professional for advice in case of pregnancy or medical treatment, or if you are breastfeeding.
How to take them3 capsules a day
Take with a large glass of water, preferably in the morning.
The recommended course1 month
The brand suggests repeating the course for 3 consecutive months.
This boxOne month of the course
90 capsules: allow 3 boxes for the full recommended course.
Sudden or patchy hair loss should be shown to a doctor first
Our verdict on this Granions Pro Keracys supplement
Review written by the Aura Capillaire team · Updated on 19 September 2026
We read buyers’ feedback on this Granions Pro Keracys supplement to pick out what comes up most often, good and not so good.
The strong points
- A complete formula, with several ingredients combined in a single course.
- A 4-in-1 formula: several ingredients in a single product.
- Biotin, keratin and maidenhair fern, with zinc and selenium.
- A French laboratory: an expert in oligotherapy for more than 70 years.
Good to know
- A dose to respect: follow the dose stated on the box, without exceeding it. In case of pregnancy or medical treatment, or if you are breastfeeding, ask a healthcare professional for advice.
- Large tablets to swallow: they are bulky and leave an unpleasant taste. Swallow them with a large glass of water, without keeping them on the tongue.
Where we land: for a woman who wants a complete supplement course to add to her hair routine over several months, this is a full option. For a single dose a day, the Pro Keracys Keratin 1000 mg below is simpler. For other products, browse our hair supplements section.

Pro Keracys 4-in-1, Pro Keracys Keratin, Pro Keracys Marine Collagen or Pro Keracys Biotin?
The same Pro Keracys supplement exists in several versions from Granions. Here is how this Granions Pro Keracys supplement compares with the three other most requested versions.
| Supplement | Form | Strength | Best for |
|---|---|---|---|
| Pro Keracys 4-in-1 Granions · this supplement |
90 units | Maidenhair fern | 4-in-1 formula |
| Pro Keracys Keratin Granions |
30 capsules | Keratin 1000 mg | Once a day |
| Pro Keracys Marine Collagen Granions |
Powder 300 g | Collagen | Powder format |
| Pro Keracys Biotin Granions |
56 units | Biotin | Simple formula |
The Granions Pro Keracys Keratin 1000 mg relies on 1000 mg of keratin, in a box of 30 capsules. It is a hair supplement. Its box lasts for a shorter time. The Granions Pro Keracys 4-in-1 supplement combines more ingredients at once.
The Granions Pro Keracys Marine Collagen comes as a 300 g powder. It is built around marine collagen. It is mixed into a drink. It will appeal to anyone who does not like swallowing large tablets.
The Granions Pro Keracys Biotin puts biotin at the centre, in a box of 56. Its formula is simpler. The 4-in-1 adds maidenhair fern and keratin.
Your questions about this Granions Pro Keracys supplement
Are the Granions Pro Keracys tablets big?
Yes, they are bulky and their taste is unpleasant on the tongue. Swallow them with a large glass of water. The collagen powder version is another option.
Granions Pro Keracys for women or men?
The brand presents it as a supplement designed for women. Follow the dose stated on the box. In case of pregnancy or medical treatment, or if you are breastfeeding, ask a healthcare professional for advice.
What is the difference between Pro Keracys 4-in-1 and Pro Keracys Keratin?
The 4-in-1 combines maidenhair fern, biotin, keratin and vitamins. The Keratin relies on 1000 mg of keratin, in a box of 30 capsules. Both are hair supplements from the same range.
Find more hair supplements in our hair vitamins range.
As an Amazon Associate we earn from qualifying purchases.
As an Amazon Associate we earn from qualifying purchases.



