Homarine Hcl
INCI: HOMARINE HCL
Reviewed by Daisy · Last updated 14 Aug 2026
A naturally derived amino acid that supports skin hydration and conditioning
Best For Skin Types
All, Dry, Mature
Addresses
Usage Frequency
Daily
What Is Homarine Hcl?
Homarine HCl is a naturally occurring amino acid derivative, typically sourced from marine organisms. In skincare formulations, it functions as a skin conditioning agent, working to maintain and support the skin's moisture balance and overall texture.
As a hydrophilic (water-loving) compound, homarine HCl has the capacity to draw moisture into the skin and help retain it, making it a useful addition to formulations designed to improve skin feel and suppleness.
How It Works
Homarine HCl operates as a humectant, drawing water molecules from the environment and deeper skin layers into the stratum corneum (the outermost skin layer). This hydration boost plumps the skin temporarily and can improve the appearance of fine lines and roughness.
Additionally, it helps reinforce the skin's natural barrier function by contributing to the aqueous layer that sits on the skin surface, which is essential for healthy skin behaviour and protection against irritants.
Clinical Evidence & References
Evidence specifically on homarine HCl in skincare remains limited, with most available data derived from ingredient supplier studies rather than independent clinical trials. The mechanism of action—as a water-binding agent—is sound based on the ingredient's chemical properties, but robust human efficacy studies are sparse.
It is generally considered a gentle, well-tolerated conditioning ingredient, though further independent research would help establish optimal concentrations and specific benefits in different formulation contexts.
How to Use
Homarine HCl is typically incorporated into serums, hydrating toners, and moisturisers. For best results, apply to clean, damp skin to maximise water uptake, then follow with an occlusive moisturiser to seal hydration in. It works well alongside other humectants such as glycerine or hyaluronic acid, and is suitable for daily use.
Safety & Precautions
Frequently Asked Questions
From the Clinic
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