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. Healthy hair and nails

Healthy hair and nails

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

As with the skin, hair and nails, also called epithelial appendages, are often a good indicator of your overall health, age and nutritional balance. Cysteine and Zinc deficiency can be diagnosed from the general state of your hair and nails. The hair and nails are made basically up of keratin, and one of the principal components of Keratin is Cysteine. During Cysteine deficiency, the body replenishes its supplies through the break down of Keratin, which has a negative impact on the hair and nails.

Cysteine is an amino acid that naturally occurs in most proteins. It is an unstable compound that can be broken down very easily. Zinc actively supports the growth of epithelial appendages and protects the body's cysteine reserves. A Zinc deficit will, therefore, not only cause a decrease in nail and hair growth but will also affect the body's Cysteine supply, which is essential to keratin synthesis. During Zinc or Cysteine deficiency, nails become split and broken and white marks may appear, hair growth can stop or it may fall out, and become fine and brittle.

Increase zinc intake

It is important to increase your Zinc intake in order to stimulate growth and to protect keratin reserves. The main sources of Zinc, found in food, are shellfish, leguminous vegetables and offal. Due to the relatively low bio-availability of Zinc, it is estimated that around 80% of adults are Zinc deficient. The requirement for Zinc is increased in women taking the oral contraceptive pill, pregnant and breast feeding women, children and teenagers during periods of growth as well as in the elderly.  A deficiency can be resolved by taking nutritional supplements.  If you are taking more than one supplement it is important to check that your zinc intake is not too high since there are many supplements already containing Zinc, and an excessive intake could have a harmful effect on your overall health.

Tackle aging

Like every cell in the body, the hair and nail cells age and die.  Hair growth slows and nails become weaker. By supplementing silica, the structure of the nail and hair can be improved.  Silica is an essential mineral in hair, nail, cartilage and arterial formation and can be extracted in 5 to 10% concentration from the Horsetail plant (Equisetum Arvense). Horsetail is recommended as a remedy to support the healthy growth of epithelial appendages (nails, skin and bone), particularly during changes in season.

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