Hydra-Shield Day Lash Serum

The water base that dissolves the humectants, peptide and buffering salts and carries them along the lash line in a light, fast-drying layer.

Water as the primary solvent in a water-based serum is universal cosmetic-science consensus; no citation required.

Draws and holds water at the lash line so lashes stay conditioned and supple through a day spent under mascara and makeup.

Glycerin is one of the most studied humectants in cosmetic science, with peer-reviewed evidence for its water-binding and conditioning role on keratin substrates; direct lash-specific data is limited but the mechanism is the same.

A plant-derived humectant and co-solvent that adds hydration, helps the serum spread thinly and evenly, and supports the fast-drying daytime finish.

Established cosmetic-science consensus as a humectant and solvent that also improves preservative efficacy; sensory and performance behaviour is documented in supplier data.

Conditions and softens the lash fibre and helps it retain moisture, keeping lashes flexible and comfortable under makeup.

Panthenol has peer-reviewed evidence for hydration and conditioning of skin and hair keratin; direct lash studies are limited, though the substrate is comparable.

A lightweight, high-capacity water-binding humectant that hydrates the lash line for a conditioned look without any heaviness or residue.

Hyaluronic acid's water-binding capacity is well-established cosmetic-science consensus; independent peer-reviewed evidence specific to lashes is limited.

A component of skin's own natural moisturising factor, added to hold moisture at the lash line and complement glycerin and hyaluronate in the daytime hydration system.

Recognised in cosmetic science as a natural-moisturising-factor humectant; consensus-level evidence, with limited lash-specific study.

A gentle osmolyte humectant that adds hydration and improves the feel of the drying film so it never feels tight or greasy.

Established as a humectant and osmoprotectant in cosmetic-science literature; lash-specific data is limited.

A phospholipid that conditions the lash surface and helps carry the peptide and other actives evenly across the fibre in an oil-free system.

Consensus cosmetic-science role as an emollient and delivery aid; supplier data supports its use as a carrier for water-based actives.

The formula's lead active, a lash- and brow-conditioning peptide included to support the appearance of a fuller-looking, well-conditioned lash line, tying the day serum into the range's peptide technology.

Supported mainly by cosmetic-ingredient supplier and manufacturer technical data for lash and brow conditioning; independent peer-reviewed evidence in human lashes is limited.

Included as a supporting conditioning vitamin alongside the peptide, consistent with the range's peptide-and-biotin approach.

Oral biotin is studied in deficiency states, but peer-reviewed evidence for topical biotin changing lash appearance is limited; it is included as a supporting conditioner, not a proven standalone active.

A soothing conditioning agent that keeps the lash line and surrounding skin comfortable for daily wear, including on extension- and lift-wearing eyes.

Allantoin has cosmetic-science consensus and some peer-reviewed support as a soothing, skin-conditioning agent.

Forms a light, fast-drying film that sets the serum quickly so mascara or makeup can be applied straight over the top without smudging or transfer.

A recognised film-former in cosmetic science with manufacturer data on its film-forming and tightening behaviour; the fast-dry benefit is a formulation property, not a lash outcome claim.

Thickens the water base to a controlled, non-drip texture that stays on the upper lash line during application rather than running toward the eye.

A standard rheology modifier with cosmetic-science consensus; no lash-specific claim is attached to it.

Buffers the serum to a stable, eye-area-appropriate pH alongside citric acid, which also helps keep the peptide stable.

A well-established buffering agent; cosmetic-science consensus.

Fine-tunes the pH to keep the serum in a comfortable range for the delicate eye area and stable for the peptide system.

A standard pH adjuster; cosmetic-science consensus.

A broad-spectrum preservative that keeps this water-based serum free of microbial growth through repeated daily use around the eye.

A globally regulated and reviewed preservative; its safety at permitted levels and efficacy are backed by regulatory assessment and cosmetic-science consensus.

Boosts the phenoxyethanol preservative system and conditions the skin, allowing a lower overall preservative load in a product used near the eye.

An established preservative booster and skin-conditioning agent; cosmetic-science consensus.