Kerastase Resistance Masque Extentioniste Length Strengthening Masque 500ml/16.9oz

Reveal stronger, longer-looking hair with Kerastase Resistance Masque Extentioniste, a targeted length-strengthening mask designed for damaged, slow-growing lengths. From root to tip, this treatment fortifies frail strands, delivering smoother, more manageable hair and helping you maintain length without compromise.

• Creatine: a deep-penetrating amino-acid-inspired ingredient that reinforces the hair fiber from within, restoring resilience where lengths tend to thin and break.
• Ceramide: supports surface recovery, smoothing the cuticle to reduce frizz and add a luminous, healthy-looking shine.
• Maleic Acid: strengthens and seals the cuticle with a uniform coating from root to tip, locking in moisture and protection against everyday styling wear.
• Bond-focused action: repairs bonds within the hair structure while boosting overall strength and elasticity, so long-lengths feel sturdier and more flexible.

What you’ll notice

• Hair that’s softer, smoother, and easier to detangle, with improved manageability for daily styling.
• Reduced breakage along the lengths, helping you preserve length and enjoy healthier-looking ends.
• Longer-length hair that feels rebuilt from the inside out, with a more resilient, flexible feel.

Ideal for

• Damaged, slow-growing lengths that need fortification to thrive.
• Anyone seeking a proactive length-preservation routine without compromising softness and glide.
• A long-hair regimen that aims to rebuild bonds and improve overall hair integrity from root to tip.

Size: 500 ml / 16.9 oz — a generous tube designed for regular use as part of a length-focused care routine.

Experience the distinct, science-backed approach of Kerastase Resistance Masque Extentioniste: a mask that doesn’t just condition, it rebuilds. By reinforcing the fiber, sealing the cuticle, and restoring elasticity, your long lengths stay healthier, more resilient, and easier to style day after day.