Nutrition and Hydratation - internal and external for hair

Hair needs nourishment and hydration just like our skin — both are essential to maintaining beauty and health. But proper hair care isn’t only about applying the right products. Your daily diet and the hairbrush you use also play a key role in your overall hydration hair routine. Discover how to combine hydration, nutrition, and brushing to achieve strong, shiny, and resilient hair.

Hydration: The key to radiant hair

External hydration

Effective external hydration comes from using products applied directly to the hair — gentle shampoos, hydrating masks, hair serums, plant-based oils, and more. Their purpose? To lock in moisture within the hair fiber and prevent dehydration. Well-hydrated hair is more flexible, shinier, and far less prone to breakage.
Take CAIR’s repair hair mask, for example. It acts like a protective shield, sealing in moisture at the core of the hair shaft and minimizing water loss. The result? Soft, supple, and luminous hair.

Internal hydration

What you drink has a direct impact on the health of your hair. Water is essential for proper cell function, including within the scalp. When hydration levels drop, hair growth slows, and strands become dry and brittle — even the best hair products can’t fully compensate.

Did you know? Hair fiber is made up of about 10 to 15% water. This percentage varies depending on your hair type, health condition, and exposure to environmental stressors like dry climates, sun, or pollution.
Drinking 1.5 to 2 liters of water per day helps stimulate blood circulation and deeply nourish each hair follicle. Combined with a solid care routine, this internal hydration contributes to hair that feels soft, flexible, and full of life.

Nutrition: Surface and deep care

External nutrition

Feeding your hair means providing lipids, fatty acids, and repairing nutrients. Treatments rich in plant oils (argan, coconut, avocado) or natural butters (shea, mango) are perfect for restoring dry, damaged, or chemically treated hair. They create a protective barrier that locks in moisture and strengthens the hair fiber.
The CAIR repair hair mask, packed with active waters, plant-based collagen, and keratin, plays a key role in your hydration routine by combining nourishment and protection for deeply repaired hair.

Nutrition from within

Your hair also draws strength from what you eat daily. To support growth and resilience, focus on a diet rich in:

• Proteins (eggs, fish, legumes) — essential for keratin production.
• Vitamins (A, C, E, and B complex) — to boost growth and prevent breakage.
• Minerals (zinc, iron, magnesium) — which support cellular regeneration.
• Omega-3s (fatty fish, flaxseeds, walnuts) — to strengthen the hair fiber.

A well-balanced diet is often the first secret to beautiful hair.

Practical tips for a complete hair hydration routine

Adopt a suitable brushing routine

Often overlooked, brushing is a key part of hair care. A well-chosen hairbrush with boar bristles and/or nylon stimulates scalp microcirculation, promotes oxygenation of hair follicles, and helps distribute natural oils along the hair strands.
La Bonne Brosse’s vegan nylon brushes N.04 and N.07, with their rounded ball tips, gently glide through all hair types—even the most stubborn—while providing a revitalizing scalp massage. For dry hair, opt for a boar bristle brush like the The Shine & Care Hairbrush The Universal: its rich keratin content helps maintain proper hydration from roots to ends.

Choose the right hydration hair routine: protective or restorative?

Every hair type has specific needs. A protective routine is ideal as a preventative measure—before blow-drying, sun exposure, or contact with saltwater or chlorine. A restorative routine is recommended after damage or repeated treatments such as coloring, heat styling, or pollution.
For a truly effective hydration routine, combining both is essential. Paired with a balanced diet, La Bonne Brosse hairbrushes and CAIR’s hydrating repair treatments create the perfect synergy. The result? Hair that’s radiant, strong, and full of life.