Kérastase Première Sérum Filler Fondamental Lightweight Repair & Shine Serum

Kérastase Première Sérum Filler Fondamental

Lightweight Leave-In Repair & Shine Serum for Damaged Hair

Available in Canada at Curious Salons

For

Damaged, dull, brittle, or calcium-stressed hair needing softness, hydration, frizz control, and a weightless luminous finish.

Description

A featherlight veil of restoration. Kérastase Première Sérum Filler Fondamental is a leave-in repairing serum that hydrates, smooths, and protects hair weakened by calcium buildup and damage. Its fluid texture absorbs instantly — delivering weightless moisture while sealing the fibre for effortless shine and softness that lasts all day.

Enriched with Citric Acid, Glycine, and smoothing actives, this serum preserves the hair’s suppleness after decalcifying treatments, shielding the fibre from humidity, dryness, and heat. Perfect for hair that breaks easily, feels stiff, or looks dull — especially in Canada’s hard-water regions.

Who It’s For

Ideal for damaged, brittle, or calcium-stressed hair needing lightweight repair, frizz control, and luminous softness. Safe for colour-treated hair.

What It Does

• Smooths and softens the fibre without weight
• Enhances shine and natural fluidity
• Provides heat protection up to high temperatures
• Preserves softness after decalcifying treatments
• Reduces frizz and protects against humidity
• Leaves hair silky, hydrated, and beautifully polished

How To Use

Apply 2–4 pumps to towel-dried hair, focusing on mid-lengths and ends. Air-dry or heat-style as desired. Can also be used on dry hair for added smoothness and shine.

When To Use

Use daily as the finishing step in your Première routine, after conditioner or mask.

Formula

A fluid leave-in serum powered by Citric Acid and Glycine — the same decalcifying and repairing actives at the heart of the Première ritual. Lightweight smoothing agents enhance shine and manageability without heaviness, while glycerin delivers lasting hydration.

Key Ingredients

• Citric Acid – Helps maintain softness and fluidity after calcium removal
• Glycine – Supports fibre flexibility, resilience, and repair
• Lightweight Smoothing Agents – Enhance shine and reduce frizz without weight
• Glycerin – Delivers lasting hydration and softness

Full Ingredient List

Aqua / Water / Eau, Citric Acid, Glycine, Lightweight Conditioners, Glycerin, Parfum / Fragrance, Linalool, Limonene, Hexyl Cinnamal, Benzyl Salicylate.

Fragrance

A luminous blend of fresh citrus, delicate florals, and soft woods — elegant, airy, and beautifully modern.

Why You’ll Love It

Because the best finishing touch is one you can’t feel. This serum hydrates, smooths, and protects without weight — leaving hair beautifully polished, full of life, and ready for anything.

Experience the luxury of Kérastase professional treatments at Curious Salons — personalized rituals that restore strength, shine, and scalp wellness. Available at all Curious Salons locations across Canada.