KERASTASE Densifique Sérum Jeunesse Youth Hair Serum 100ml is a leave-in serum designed for thinning, ageing or density-lacking hair, helping restore a fuller, thicker and more youthful-looking appearance. As part of the Densifique range, it targets hair that has lost body, substance and vitality, leaving the lengths looking healthier, smoother and more radiant.
The wider KERASTASE Densifique range is specifically developed for thinning hair and loss of density, with densifying technologies designed to improve fullness, body and resilience.
Youth-enhancing care – Helps improve the appearance of hair showing visible signs associated with ageing.
Supports fuller-looking hair – Ideal when hair appears thinner, finer or less dense than before.
Improves hair quality – Helps hair feel smoother, softer and more manageable.
Enhances shine – Helps restore luminosity to dull, tired-looking lengths.
Leave-in treatment – Easy to incorporate into a daily hair routine without rinsing.
100ml · Youth Hair Serum · Thinning Hair · Density · Fullness · Leave-In
Best for: Thinning hair • Ageing hair • Hair lacking density • Fine hair • Dull hair • Hair lacking body • Hair lacking vitality
What Is It?
KERASTASE Densifique Sérum Jeunesse Youth Hair Serum 100ml is a leave-in treatment from the Densifique collection, created for hair experiencing loss of density and visible signs of ageing.
As hair changes over time, it can begin to appear finer, less dense, duller and less full-bodied. Sérum Jeunesse is designed as a finishing treatment to help improve the overall appearance and quality of these lengths.
Rather than acting like a traditional styling serum that mainly controls frizz, Sérum Jeunesse is positioned around youthfulness, density and hair quality.
The result:
Care → Improve Hair Quality → Restore Body → Enhance Shine → Youthful-Looking Hair
Sérum Jeunesse vs Cure Densifique
These two Densifique treatments should not be positioned as the same product.
Sérum Jeunesse → A leave-in youth-focused hair serum for improving the appearance and quality of hair showing signs associated with ageing.
Cure Densifique → A dedicated scalp density programme for visibly thinning hair. KERASTASE recommends one vial daily for three months and positions it specifically around maintaining hair density.
So for a customer whose primary concern is significant thinning/loss of density, Cure Densifique is the more targeted scalp programme.
Why You'll Love It
- Youth-focused leave-in hair serum
- Designed for hair lacking density and vitality
- Helps hair appear fuller
- Improves the appearance of ageing hair
- Supports softer, smoother-feeling lengths
- Helps enhance shine
- Ideal for thinning or fine-looking hair
- Lightweight leave-in care
- No rinsing required
- Part of the professional Densifique density routine
Who Is It For?
Ideal for:
Thinning hair
Ageing or mature hair
Fine hair
Hair lacking density
Hair lacking fullness
Hair lacking body
Dull or tired-looking hair
Hair lacking vitality
Hair that looks thinner than it used to
Pair Me With
KERASTASE Densifique Bain Densité Shampoo – Start with the Densifique cleansing step for thinning hair lacking density and fullness. KERASTASE positions it as a Hyaluronic Acid shampoo supporting stronger, more resilient hair.
KERASTASE Densifique Fondant Densité Conditioner – Follow with lightweight conditioning care that helps plump and strengthen fine, thinning hair while adding body.
KERASTASE Densifique Densimorphose Thickening Hair Mousse – Add when you also want instant volume, body and substance without weighing down fine or thinning hair.
KERASTASE Densifique Cure Densifique – Consider for a more intensive scalp-focused programme when the main concern is visible thinning and loss of hair density.
