The Hydration Serum — Multi-Molecular Hyaluronic Acid

The Hydration Serum

Multi-weight hyaluronic acid for deep, lasting hydration.

Hyaluronic Acid | 1% Niacinamide

Size:

50ml

with Multi-Molecular Hyaluronic Acid

Not all hyaluronic acid is the same. This formula uses three different molecular sizes — small, medium, and large — so hydration reaches every depth of the skin, not just the surface. Paired with Panthenol (Vitamin B5) at 1.5% to reinforce the skin barrier and lock moisture in.

Key Actives

Sodium Hyaluronate 0.6% total — Three sizes of hyaluronic acid. Each one hydrates at a different skin depth for all-day moisture.
Panthenol 1.5% — Vitamin B5 that pulls moisture in and keeps it there. Works alongside hyaluronic acid to reinforce the barrier.
Niacinamide 1% — A supporting dose to help soothe and strengthen.

What It Does

Hydrates at every skin depth, not just the surface.

How to Use

Apply 2–3 drops to cleansed skin. Use AM/PM.

Cleanse your face and pat dry.
Apply 2–3 drops to face and neck.
Gently press into skin until absorbed.
Follow with moisturiser.
Use morning and evening.

Benefits

Hydrates • Smooths • Soothes

For external use only. Avoid contact with eyes. Patch test before first use. Keep out of reach of children.

Made in Britain | 30ml / 1.01 fl.oz | skinometri® | Skincare that Adds Up

How to Use

Full Ingredients List

The Science

The Science Behind Deep Hydration

Multi-Weight Hyaluronic Acid: Hyaluronic Acid (HA) is a molecule that occurs naturally in your skin and can hold up to 1,000 times its weight in water. Our formula uses multiple molecular weights of HA to deliver multi-level hydration, a strategy supported by clinical research:

High-Weight HA: Sits on the surface of the skin, providing immediate hydration and smoothing the appearance of fine lines [1].
Low-Weight HA: Studies have shown that lower molecular weight HA (20-300 kDa) can penetrate the skin's outer layers, delivering sustained hydration from within [2]. This helps to plump the skin for a bouncy, healthy look.

1% Niacinamide (Vitamin B3): We've included a supportive 1% concentration of Niacinamide to help strengthen the skin barrier. A healthy barrier is crucial for locking in the hydration delivered by Hyaluronic Acid, preventing transepidermal water loss (TEWL) [3].

Why it works: By providing both surface-level and deep hydration while simultaneously strengthening the skin barrier, this serum doesn't just add moisture—it helps your skin hold onto it. Clinical trials have demonstrated that topical HA serums can increase skin hydration by as much as 55% [4].

References

[1] Draelos, Z. D. (2021). Efficacy Evaluation of a Topical Hyaluronic Acid Serum in Facial Photoaging. Dermatology and Therapy, 11(4), 1385–1394. https://pmc.ncbi.nlm.nih.gov/articles/PMC8322246/

[2] Essendoubi, M., Gobinet, C., Reynaud, R., Angiboust, J. F., Manfait, M., & Piot, O. (2016). Human skin penetration of hyaluronic acid of different molecular weights as probed by Raman spectroscopy. Skin Research and Technology, 22(1), 55–62. https://pubmed.ncbi.nlm.nih.gov/25877232/

[3] Boo, Y. C. (2021). Mechanistic Basis and Clinical Evidence for the Applications of Nicotinamide (Niacinamide) to Control Skin Aging and Pigmentation. Antioxidants (Basel, Switzerland), 10(8), 1315. https://pmc.ncbi.nlm.nih.gov/articles/PMC8389214/

[4] Draelos, Z. D., Diaz, I., Namkoong, J., Piquero-Casals, J., Krutmann, J., Gunt, H. B., & Oresajo, C. (2021). Efficacy Evaluation of a Topical Hyaluronic Acid Serum in Facial Photoaging. Dermatology and Therapy, 11(4), 1385–1394. https://pmc.ncbi.nlm.nih.gov/articles/PMC8322246/

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