Fine and Brittle Hair: The Complete Routine
Fine and brittle hair is not a life sentence. This hair type simply calls for a targeted approach that strengthens the hair fiber at every stage: at the root, along the lengths and all the way to the ends.
Why hair becomes fine and brittle
Several factors can weaken the hair fiber: heat tools, repeated colouring, nutritional deficiencies, natural aging of the follicles, or insufficient hydration of the scalp and lengths.
A three-step routine
1. Strengthen at the root
The Renaissance Serum works on the scalp through its Multi-Peptide Scalp Technology™: 5 % Capixyl™, Acetyl Tetrapeptide-3, Biotinoyl Tripeptide-1, pea peptides and an amino acid complex. A balanced scalp is the foundation for stronger hair from the moment it emerges. For a cleaner daily application, use the Scalp Serum Applicator.
2. Repair the lengths and ends
The Length and Ends Regenerating Serum, with 2 % hyaluronic acid and enriched with Biosaccharide Gum-1, hydrates deeply and helps reduce the appearance of split ends. It is vegan, cruelty free and suitable for women who are pregnant or breastfeeding. Apply 1 to 2 pipettes daily on the lengths.
3. Nourish from within
The GROW + GLOW supplement provides nutritional support with hydrolyzed marine collagen, hyaluronic acid, biotin and inositol, complementing topical care.
Good daily habits
- Reduce the frequency and temperature of heat tools, or use a heat protectant.
- Space out colouring sessions and favour repairing care after each one.
- Detangle with a wide-tooth comb such as the Signature Hair Comb, starting at the ends and working gently up toward the roots to limit tension on the fiber.
- Avoid aggressive brushing on wet hair, which is more vulnerable to breakage.
What to expect
Early positive signs of shine and strength often appear within 30 days, with significant results after 3 months of consistency. Use your treatments at least 5 days out of 7.
Consistency, without thinking about it. This is where most routines fail: you forget to reorder, and the treatment stops right when it was starting to work. A Dupuis subscription delivers automatically, with 15 % off, and pauses whenever you want.
Discover the Growth Trio for a complete ready-made routine.
Frequently asked questions
What is the most common cause of fine and brittle hair?
Heat tools, repeated colouring and a lack of hydration in the scalp and lengths are the most common causes of a weakened hair fiber.
How long does it take to strengthen brittle hair?
First signs of shine and strength often appear within 30 days, with significant results after 3 months of a complete routine combining scalp care, length care and nutritional support.
Is the Regenerating Serum suitable for coloured hair?
Yes. It is formulated in particular for coloured hair, chemically treated hair, hair exposed to heat, and hair extensions.
