Free delivery on orders over €59, in metropolitan France. Free delivery on orders over €59, in metropolitan France.
  • Your needs
    Your needs
    Stress and sleep
    Stress Management Sleep Emotional Stability Memory & focus Physical and Mental Energy
    Digestive sphere
    Digestion
    Tonus & vitality
    Natural Defenses Vitality
    Circulation and cardiovascular system
    Venous Circulation Cardiovascular system Blood Sugar Control
    Bones & joints
    Joint Comfort Bone Capital
    Well-being & beauty
    Skin Wellbeing and Beauty Slimming
    SPECIAL OFFER
    Free vitamin D3
    In February, take advantage of a free box of vitamin D3 for all orders with no minimum purchase!
    DISCOVER
    Your needs
    Stress and sleep
    Stress Management Sleep Emotional Stability Memory & focus Physical and Mental Energy
    Digestive sphere
    Digestion
    Tonus & vitality
    Natural Defenses Vitality
    Circulation and cardiovascular system
    Venous Circulation Cardiovascular system Blood Sugar Control
    Bones & joints
    Joint Comfort Bone Capital
    Well-being & beauty
    Skin Wellbeing and Beauty Slimming
    SPECIAL OFFER
    Free vitamin D3
    In February, take advantage of a free box of vitamin D3 for all orders with no minimum purchase!
    DISCOVER
  • Special offers
    Special offers
    Prizes and packs
    Last Chances
    Special offers
    Prizes and packs
    Last Chances
  • D-Stress range
    D-Stress range
    D-Stress essentials
    NOUVEAU - D-Stress CBD
    D-Stress range
    D-Stress essentials
    NOUVEAU - D-Stress CBD
Search
Your needs
Retour au menu
Your needs
Stress and sleep
Stress Management Sleep Emotional Stability Memory & focus Physical and Mental Energy
Digestive sphere
Digestion
Tonus & vitality
Natural Defenses Vitality
Circulation and cardiovascular system
Venous Circulation Cardiovascular system Blood Sugar Control
Bones & joints
Joint Comfort Bone Capital
Well-being & beauty
Skin Wellbeing and Beauty Slimming
SPECIAL OFFER
Free vitamin D3
In February, take advantage of a free box of vitamin D3 for all orders with no minimum purchase!
DISCOVER
Your needs
Stress and sleep
Stress Management Sleep Emotional Stability Memory & focus Physical and Mental Energy
Digestive sphere
Digestion
Tonus & vitality
Natural Defenses Vitality
Circulation and cardiovascular system
Venous Circulation Cardiovascular system Blood Sugar Control
Bones & joints
Joint Comfort Bone Capital
Well-being & beauty
Skin Wellbeing and Beauty Slimming
SPECIAL OFFER
Free vitamin D3
In February, take advantage of a free box of vitamin D3 for all orders with no minimum purchase!
DISCOVER
Special offers
Retour au menu
Special offers
Prizes and packs
Last Chances
Special offers
Prizes and packs
Last Chances
D-Stress range
Retour au menu
D-Stress range
D-Stress essentials
NOUVEAU - D-Stress CBD
D-Stress range
D-Stress essentials
NOUVEAU - D-Stress CBD
My account
Your cart
Earn 0 points with this purchase
subtotal
0,00 €
Delivery
Free
Estimated delivery between 05/12 and 05/13.
Total
0.00 €
Just 59,00€ more to enjoy shipping
Proceed to checkout
X
cover popin image

-10%

off your
next order

Sign up to our newsletter and receive a promotional code for a 10% discount, to be used on the entire website when you place your next order.

Your subscription has been taken into account

By validating, I agree to receive the Synergia newsletter.
We undertake never to communicate your email address to third parties.

Confirm
Reset
  1. Home
  2. Our health advice
  3. Well-being & beauty
  4. What is keratin?

What is keratin?

Stress & sleep Digestive sphere Bones & joints Tonus & vitality Circulation & cardiovascular Well-being & beauty Food

Keratin, what exactly is it?

Keratin is primarily a protein. It is the main component of the hair fiber. To help you visualize this, imagine protein bonds in this way: the finest threads, intertwined many times, mix to form tiny fibrils, microfibrils if you prefer. Know that these are stored to form macrofibrils. Keratins make up the fibrous layer (cortex). They are in the area between the hair pulp and the scale layer (cuticle).

Each hair is made up of nearly 90% specific protein molecules. The rest is made up of elements such as water, pigments, and lipids (natural fats).

An important point to consider: keratin is also found in the fingernails and toenails as well as in the skin, where it provides strength, firmness, and resistance.

What is the function of keratin in hair?

The elasticity and strength of hair depend solely on the intact component of its fiber shaft. Since they are made of keratin, hair proteins play a crucial role and have three main qualities. Indeed, they are strong, elastic, and flexible. Furthermore, hair proteins are insoluble in water. However, they are extremely resistant to external influences.

What degrades hair keratin?

Despite the fact that hair proteins are strong, over time, they can undergo a multitude of attacks from the outside. Small flaws manifest in the keratin. In this way, hair gradually loses its strength and flexibility. Some styling methods optimize this degradation of keratin. First, there are perms. Indeed, reducing agents penetrate the hair and open the cross-links present between the keratin chains. With each use, proteins and lipids are removed from the hair. The hair loses its tensile strength. Then there are colorings and bleaches as well as recurrent styling with a flat iron or curling iron, which also degrade the keratin layer. And let's not forget sunlight. Indeed, over the years, especially when one has long hair, UV rays can impact the hair structure and cause keratin deterioration.

Keratin for hair: what is the effect of care formulas with this element?

Keratin is relevant as a highly qualitative ingredient in the cosmetic industry. That is why it is found in various products such as shampoos, conditioners, and hair treatments. The element is in liquid form, to optimize the health of the hair structure and reshape damaged hair. These various products can mitigate flaws in the natural structure of keratin. Thus, the hair surface is more solidified but also much softer and more pleasant to the touch.

Free delivery

from 59€ of purchase

Loyalty

Join our program

Secure payment

Credit card or paypal

Contact us

By form or at 04 77 42 30 10.
From Monday to Friday from 9am to 12pm and from 2pm to 5pm

-10%

off your
next order

Sign up to our newsletter and receive a promotional code for a 10% discount, to be used on the entire website when you place your next order.

Your subscription has been taken into account

By validating, I agree to receive the Synergia newsletter.
We undertake never to communicate your email address to third parties.

Mes favoris
add_circle_outline Créer une nouvelle liste
((modalTitle))

((confirmMessage))

((title))
Sign in

You need to be logged in to save products in your wishlist.

((loginText))
Products
Delivery
Secure payment
Satisfied or refunded
Customer reviews policy
Contact Us Now !
Frequently Asked Questions
Our company
Our Story
D-Stress Range
Our 4 fundamental pillars
Our services
Loyalty Program
Our health tips
  • Products
    Delivery
    Secure payment
    Satisfied or refunded
    Customer reviews policy
    Contact Us Now !
    Frequently Asked Questions
  • Our company
    Our Story
    D-Stress Range
    Our 4 fundamental pillars
  • Our services
    Loyalty Program
    Our health tips
Verified Reviews
4,50/5
The rating is based on 1960 reviews from our customers
back to top
©’25 Synergia — All rights reserved Legal Notice Terms and conditions of use Cookies