K18 FutureIQ Biomimetic Hair Longevity Serum 90 ml

What it is

K18 FutureIQ™ Biomimetic Hair Longevity Serum is a lightweight, once-nightly, leave-in scalp serum designed to address visible signs of premature hair aging, including shedding, early graying, and scalp aging. Powered by proprietary MultiVital™ technology, it is clinically proven to deliver up to 19,000 more hairs, fewer grays, and an improved scalp barrier over a 12-week study.

Best for

People experiencing minimal to moderate hair shedding, early graying, or changes in scalp health who want a proactive hair-longevity routine. K18 says FutureIQ™ works best for gray-hair results when less than 30% of the hair is gray.

How it works

MultiVital™ technology combines biomimetic peptides, a root-anchoring complex, and advanced antioxidants to address interconnected signs of premature hair aging. Together, they help reduce the breakdown of root proteins that hold hair in place, support the signaling involved in melanin synthesis and transport, and strengthen the follicle’s natural defenses against oxidative stress to help protect the scalp.

Why you’ll like it

• Helps reduce shedding and support fuller-looking hair
• Helps address visible premature graying
• Supports scalp barrier health and long-term scalp resilience
• Lightweight, water-based serum designed to absorb quickly
• Should not leave hair greasy or transfer residue to pillows when used as directed
• Can be applied to a damp or dry scalp with no difference in results
• One simple nightly application with no rinsing

Your hair longevity journey

Month 1 | Renewal
• 100% showed reduced hair fall
• 82% agreed the product did not contribute to hair oiliness
• 95% agreed the product did not increase scalp sensitivity

Month 2 | Momentum
• Up to 10,000 more hairs for visible volume
• 87% showed increased hair density
• 100% showed an improved scalp barrier

Month 3 | Visible transformation
• 70% showed fewer gray hairs
• Up to 19,000 more hairs for fuller-looking volume
• 54% said their scalp felt revitalized

Results reported by K18 from a 12-week clinical study. Individual results may vary.

How to use

Use once nightly. Apply 4 droppers, each filled to the marked line, directly to a damp or dry scalp. Distribute across the middle part, side part, and hairline. Massage from the hairline toward the crown and nape until the serum is fully absorbed. Do not rinse. For easier application, put your hair up. One 90 ml bottle provides approximately 1 month of nightly use.

Good to know

The serum can be used on a damp or dry scalp with no difference in results. Its lightweight texture is designed to absorb quickly without leaving pillow residue or making hair greasy. Because the formula is water-based, it may cause non-chemically straightened styles, silk presses, or blowouts to revert; K18 recommends targeted application around the hairline and edges if this is a concern.

Ingredients

Water (Aqua) (Eau), Pentylene Glycol, Dimethyl Isosorbide, Glycerin, Niacinamide, Polysorbate 20, Sodium Benzoate, Hydroxyethylcellulose, Lysine Carboxymethyl Cysteinate, Citric Acid, Zinc Sulfate Heptahydrate, Palmitoyl Dipeptide-52, Hydrolyzed Yeast Protein, Potassium Sorbate, Disodium Phosphate, Polysorbate 60, Palmitoyl Tetrapeptide-20 Amide, Sodium Phosphate, Sodium Nitrate.

Product details

• Brand: K18
• Line: FutureIQ™
• Product type: Biomimetic hair longevity scalp serum
• Size: 90 ml / 3 oz
• Technology: MultiVital™ biomimetic peptides, root-anchoring complex, and advanced antioxidants
• Best suited for: Premature graying, minimal to moderate shedding, and scalp aging
• Application: Once-nightly, leave-in scalp treatment
• Use on: Damp or dry scalp
• Supply: Approximately 1 month per bottle