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Give stressed roots a fresh start without weighing hair down.
Lightweight serum absorbs with no greasy or sticky residue.
Peptide-powered formula supports stronger, more resilient-looking hair.
Easy leave-in care for fragile strands and visible thinning.
Description
K18 FutureIQ Biomimetic Hair Longevity Serum is a lightweight scalp serum designed to support stronger-looking hair. Its peptide-powered formula helps create a balanced scalp environment while caring for hair at the root.
The fluid, non-greasy texture spreads easily through sections and absorbs without leaving hair heavy or sticky. With no strong scent or visible residue, it slips comfortably into a daily routine. It suits anyone noticing shedding, fragile strands or changes in density, including hair stressed by styling or ageing. Apply directly to a clean scalp, then massage in gently and leave it to work. Used regularly, it helps hair feel more resilient, supported and easier to manage from the roots. The fresh, weightless finish means you can style straight afterwards, morning or evening.
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Directions
How To Use K18 FutureIQ Biomimetic Hair Longevity Serum
The water base that carries and dissolves the other ingredients in most products.
May suit
All hair and skin types.
Worth knowing
Almost always the first ingredient listed in water-based products.
Pentylene GlycolHumectants
Humectant and solvent
Helps attract and hold moisture while also improving the spreadability of a formula.
May suit
Those seeking lightweight hydration without heaviness.
Worth knowing
It also supports product texture and can enhance the performance of other ingredients in a formula.
Dimethyl IsosorbideSolvents
Solvent / delivery enhancer
It helps dissolve certain ingredients and improves how well they spread or absorb in a formula.
May suit
Those using products with active ingredients that benefit from enhanced penetration or even distribution.
Worth knowing
It is commonly used to support the performance of other ingredients, especially in targeted treatments. Its presence typically indicates a formula designed for improved delivery or stability.
GlycerinHumectants
Humectant
Attracts and holds water to help hair feel hydrated and soft.
May suit
Dry or dehydrated hair, and many curl and moisture routines.
Worth knowing
A very common, well-tolerated humectant used across countless products.
NiacinamideAnti-dandruff / scalp care
Scalp-supporting vitamin
Niacinamide is a form of vitamin B3 that helps support a balanced scalp environment and improve hair resilience.
May suit
Those looking to support scalp comfort, strengthen hair, or maintain a healthy-looking scalp barrier.
Worth knowing
It is commonly used in both skincare and haircare for its soothing and barrier-supporting properties. It pairs well with many other ingredients and is generally well tolerated.
Polysorbate 20Thickeners and stabilisers
Solubiliser / emulsifier
Helps blend oil‑based ingredients into water‑based formulas for a smooth, even texture.
May suit
Those using products with essential oils or fragranced blends, as it helps disperse these evenly.
Worth knowing
It is widely used as a gentle solubiliser in both leave‑in and rinse‑off products. Its presence can improve product consistency and prevent ingredient separation.
Sodium BenzoatePreservatives
Preservative
Helps protect water-based products from spoilage so they stay usable.
May suit
All products that need a preservative system.
Worth knowing
Often paired with other preservatives for broad protection.
HydroxyethylcelluloseThickeners and stabilisers
Thickener and stabiliser
A polymer that helps thicken and stabilise haircare formulas.
May suit
Those who prefer products with a smooth, uniform texture or need easier application and distribution.
Worth knowing
It is derived from cellulose and is widely used because it provides viscosity without weighing hair down. It also helps improve the feel and spreadability of many water-based products.
Citric AcidpH adjusters
pH adjuster
Fine-tunes the product pH, which can help the hair surface feel smooth.
May suit
Most hair types as part of a balanced formula.
Worth knowing
Usually present in small amounts to balance the formula.
Potassium SorbatePreservatives
Preservative
Helps keep haircare formulas stable by preventing the growth of microbes.
May suit
Anyone who uses water-based products that benefit from reliable preservation.
Worth knowing
It is commonly used alongside other preservation systems to maintain product freshness and extend shelf life. It is generally well tolerated in rinse-off and leave-in products.
Disodium PhosphatepH adjusters
pH adjuster
Helps maintain a stable pH level in a haircare formula.
May suit
Anyone interested in products formulated for consistent performance or stability.
Worth knowing
It is commonly used as a buffering agent to help keep a formula working as intended over time.
Polysorbate 60Thickeners and stabilisers
Emulsifier and solubiliser
Helps blend oil- and water-based ingredients and keep formulas stable.
May suit
Those using creams or conditioners that rely on smooth, even textures.
Worth knowing
It is widely used in haircare to ensure consistent texture and to help disperse ingredients evenly. It also offers mild surfactant properties that support product spreadability.
Sodium PhosphatepH adjusters
pH adjuster
Helps maintain the product’s pH balance for stability and performance.
May suit
Those interested in balanced formulations that stay consistent over time.
Worth knowing
It is commonly used as a buffering ingredient to keep haircare formulas stable and effective. It does not impact hair feel or styling performance.
