Nails are more than just aesthetic attributes. They reflect our general health, and when they become brittle, fragile or split, it can be the sign of an internal imbalance or prolonged exposure to deleterious factors. At Santi-Shop, we're committed to offering a natural approach that respects living beings. This article explains in detail the causes of brittle nails and the natural solutions for long-term remedy.
The nature of nails: structure, composition and growth
Like hair and body hair, nails are phanera. They are made up mainly of keratin, a fibrous protein composed of sulfur-containing amino acids, notably cysteine. This keratinous structure is produced by the nail matrix, located beneath the skin at the base of the nail, at the lunula.
Nail growth is continuous but relatively slow, with an estimated average speed of 2.5 to 3 mm per month for fingernails, and up to six times slower for toenails.
Nail formation depends on a complex process of cellular differentiation within the matrix. Once keratinized, these cells are pushed forward, forming the visible nail. This process is influenced by various systemic factors: nutrient intake, hormonal status, local vascularization and overall lifestyle.
Why do nails become brittle?
The phenomenon of brittle nails, or onychoschizia, manifests itself in a loss of cohesion between the layers of keratin. Several mechanisms may be involved.
Nutritional deficiencies
Nail health depends on an optimal supply of micronutrients. In case of deficiency, keratinization becomes incomplete or unstable, impairing nail strength. Among essential nutrients, biotin (vitamin B8) is one of the most studied.
It is directly involved in fatty acid synthesis and the regulation of enzymes involved in keratinocyte metabolism. Clinical studies have shown that biotin supplementation can increase nail thickness by an average of 25% in nail-deficient individuals.
Zinc is a key trace element in cell proliferation and healing. It plays a part in the integrity of the nail matrix. Zinc deficiency can lead to impaired nail growth, white spots (leukonychia) or deformities.
Iron, particularly in the form of ferritin, is also essential. Often silent, iron-deficiency anemia frequently manifests itself as nail fragility, slower growth or even abnormal nail curvature (koilonychia).
Sulfur amino acids, such as methionine and cysteine, are essential for keratin synthesis. A diet low in protein or organic sulfur directly affects the mechanical strength of nails.
Finally, essential fatty acids, in particulars omega-3They help hydrate the matrix and maintain the integrity of the nail's natural lipid barrier.
Environmental and chemical aggression
In addition to deficiencies, nails can be weakened by repeated exposure to aggressive agents. The frequent use of household detergents, solvents, or even solvents containing acetone, contributes to the dehydration of the nail plate.
Cold, thermal shock and excessive humidity also alter keratin bonds. As a result, the stratum corneum loses its natural elasticity, becomes brittle and splits.
Hormonal disorders and underlying pathologies
Hormonal variations, particularly those linked to menopause or thyroid disorders (especially hypothyroidism), also influence nail growth and quality.
A reduction in estrogen, for example, leads to a drop in cellular hydration and a generalized weakening of the skin. Certain dermatological disorders, such as le psoriasis or lichen planus, can also cause nail dystrophy.
Natural solutions to strengthen nails
The first response to brittle nails is to act at source, providing the body with the elements it needs for optimal keratinization. At Santi-Shop, we offer natural solutions validated by science.
Targeted, intelligent nutrition
A diet rich in micronutrients is essential for healthy skin. Eggs pulsesFatty acids, oily fish, nuts and leafy green vegetables should be regularly included in the diet. In the event of a proven deficiency, targeted supplementation becomes relevant.
Dietary supplements based on biotin, zinc, organic silicon (found in horsetail or bamboo), or natural sulfur (such as MSM), are recommended. These active ingredients work in synergy to support the nail matrix. The addition of essential fatty acids from plant sources (linseed oil, camelina, hemp) also promotes better hydration of the nail plate.
Complements available on Santi-Shop
Our boutique offers a rigorous selection of natural food supplements, formulated to nourish the nail from within. These products are free from unnecessary chemical additives, and their bioavailability is optimized thanks to innovative galenic forms.
The choice of varnish: a fundamental point
An often overlooked aspect of nail care is the quality of the nail polish used. Most conventional nail polishes contain toxic substances such as formaldehyde, toluene or phthalates.
Not only are these compounds irritating, they can also be absorbed through the nail, which is a porous structure. Once through the nail plate, these substances can pass into the capillary bed and enter the bloodstream.
So it's essential to opt for natural nail polishes, formulated without chemical solvents. At Santi-Shop, we offer a range of natural nail polishes that respect the nail's physiology while providing long-lasting aesthetic results.
Discover our range of varnishes
Local care: baths and oils
External treatments also have their place in a natural strategy. Castor oil baths, rich in fatty acids and vitamin E, nourish and soften the nail plate. Argan oil or borage oil are also indicated for their restructuring effect. Finally, the regular application of essential oils, such as lemon (antiseptic, hardening), should be done with care and always diluted in a vegetable oil.
Comprehensive, natural care for beautiful nails
Brittle nails reflect an imbalance that can be corrected with a holistic, natural approach based on an understanding of the biological mechanisms at work. By restoring proper nutrition, avoiding environmental toxins and using healthy, physiologically-sound products, it's possible to regain strong, smooth, healthy nails.