How to grow long, strong hair: our complete guide

Whether straight, wavy, or curly, long hair is often seen as a symbol of healthy, vibrant beauty. But behind those silky, resilient lengths lies a demanding reality: growing your hair while keeping it strong requires consistency, patience, and, most importantly, the right habits.

To achieve long, healthy hair, two key steps are essential. First, stimulate growth and strengthen the fiber, and second, care for your lengths daily to maintain their beauty.

From targeted care products—that boost shine and volume—to preventive care—that reinforces the hair fiber over time—discover how to support your hair day after day with an expert routine.

Promote growth while strengthening the fiber: the right steps for long, strong hair

Growing long hair isn't just a matter of time. For growth to be visible and to last, you first need to understand what drives the hair growth process: the hair life cycle. This cycle alternates between phases of growth, rest, and shedding, and each hair follicle evolves at its own pace. Providing the hair fiber with an environment that is conducive to this cycle is essential to strengthen the hair in the long term.

Hair health always starts at the scalp. To encourage strong, healthy growth, maintaining proper blood micro-circulation is essential. This is what supplies the hair follicles with the essential nutrients they need. Regular scalp massage, done with your fingertips and using active circular movements, not only releases tension but also oxygenates the roots and stimulates growth.

You can also explore our targeted tips on how to support hair regrowth with simple habits and tailored active ingredients.

Keratin: the protein that structures and strengthens hair

The main component of the hair fiber, keratin, makes up more than 90% of the hair's composition. This structuring protein is essential at every stage of the hair's life cycle. It is present from the root to the tips, ensuring strength, elasticity, and resistance to external aggressions.

Among the different forms of keratin, keratin 85 stands out. It is the only type naturally present throughout the entire hair fiber. It plays a key role in the growth process by accelerating hair development while strengthening its internal structure.

When keratin is weakened or damaged, hair becomes duller, brittle, and prone to split ends. To support it, it is recommended to incorporate products rich in keratinizing active ingredients, such as sulfur amino acids (particularly cysteine) or certain plant proteins, into your routine. These active ingredients help rebuild the hair's fiber from within and improve its long-term resilience.

However, be careful not to use too much keratin. Overloading your can can cause it to stiffen and produce the opposite effect of what you were looking for.

Detangling, drying, and styling: adopting the right techniques

Always detangle your hair gently, starting at the ends. Use a brush suited to your hair type or a wide-toothed comb, ideally on slightly damp hair, while using a detangling product.

Dryin also requires specific care. Air drying remains the best option. If you use a hair dryer, use a moderate temperature and always maintain a safe distance from your hair to preserve fiber health. Also, remember to protect your hair from the heat by using a thermal protecting product before drying.

Additionally, some everyday habits can weaken your hair without you even realizing it. Tight hairstyles worn repeatedly (high ponytails, tight braids…) put tension on the scalp. This can lead to localized hair loss, also known as traction alopecia.

Preserve the shine and volume of long hair

Natural shine: how to enhance your hair’s natural shine?

The beauty of long hair depends as much on its health as on its ability to reflect light and maintain volume. To preserve your hair’s natural shine, rinse your hair with lukewarm water or finish with a cool rinse to close the cuticles and intensify its shine. You can also enhance the shine by applying gloss treatments or shine sprays formulated with natural active ingredients. These products work by depositing a light, luminous veil on the surface of your hair.

Lacking volume? Tips for visibly thicker hair

Fine or heavy hair can easily lose volume. To restore density and structure, use light texturizing products such as volumizing mousses or sprays. They will add fullness without leaving greasy residue. A well-thought-out haircut with carefully layered ends also facilitates natural movement; as a result, the hair appears fuller and denser.

Finally, when styling, use gentle movements and try drying your hair upside down to maximize volume at the roots. Over time, these steps will make all the difference in achieving a visibly higher hair density.

How to protect long hair from external aggressions?

Long hair is particularly sensitive to external aggressions—such as UV rays, pollution, and repeated friction. These factors increase oxidative stress, weaken the hair fiber, and dull the overall appearance of the hair. The sun can cause severe dryness and gradual loss of shine, while polluting particles accumulate on the scalp, disrupting its balance.

To limit these effects, incorporate protective hair care products into your routine, particularly those enriched with UV filters. Furthermore, wear a hat, cap, or light scarf for additional protection during prolonged exposure.

You should also adapt your hair care routine to the season—nourishing formulas in winter and increased sun protection in summer—to keep your hair strong and shiny all year round.
 

Trimming to promote growth: myth or reality?

Contrary to popular belief, cutting your hair does not make it grow faster. However, regular maintenance of the ends is essential to keep your lengths healthy. Damaged or split ends weaken the hair fiber and can lead to premature breakage. By removing them, you prevent damage from spreading up the hair shaft, thus preserving the quality and strength of your hair.

Your hair type and your goals influence the frequency of trims. For long, healthy hair, visit the hairdresser every three to four months to refresh the ends without compromising the length. For fragile or damaged hair, more frequent maintenance may be necessary, with haircuts every two months to limit further damage and breakage.

Whether you're growing your hair or maintaining its length, every step counts. Adopt a targeted routine that respects your scalp and hair fiber and give yourself the best chance of achieving long, strong, and shiny hair.

Discover our selection of René Furterer expert products to boost growth, strengthen the fiber, and enhance your long hair’s natural beauty.