Ingredient library
Every ingredient SkinAtlas knows about — all 2165 of them. What each one does, what it works well with, and what to watch for.
30 ingredients in Humectant matching "acid" — page 1 of 2
A naturally occurring amino acid used as a humectant that helps maintain skin hydration and supports the NMF.
A naturally occurring amino acid that acts as a humectant and supports the skin's own moisture-retention system.
A naturally occurring amino acid that functions as a humectant and is a component of the skin's natural moisturizing factor.
The free amino acid mixture released by complete hydrolysis of collagen, used as a humectant and skin-conditioning agent.
A sulfur-containing amino acid that acts as a humectant and antioxidant in cosmetics, contributing to skin hydration and supporting the skin's own defense mechanisms.
A naturally occurring amino acid that functions as a humectant and contributes to the skin's natural moisturizing factor.
The simplest amino acid, used as a humectant that supports the skin's natural moisturizing factor.
A semi-essential amino acid naturally present in the skin's NMF that acts as a humectant and antioxidant to hydrate and protect skin.
The hydrochloride salt form of the amino acid histidine, used as a humectant, NMF component, and mild pH buffer in cosmetic formulations.
A humectant that can hold many times its weight in water.
A non-proteinogenic amino acid and key component of collagen used in cosmetics as a humectant; its presence in the NMF supports hydration and signals collagen stabilization.
A cationic quaternary-ammonium derivative of hyaluronic acid that binds electrostatically to negatively charged skin proteins, delivering sustained surface hydration.
An essential amino acid used as a humectant that contributes to skin moisturization, barrier integrity, and surface-level repair.
A ferment filtrate produced by culturing Lactococcus bacteria on a hyaluronic acid substrate, yielding a humectant ingredient that hydrates and smooths the skin.
An essential branched-chain amino acid used as a humectant that helps maintain skin hydration as part of the skin's natural moisturizing factor.
An essential amino acid used in cosmetics as a humectant to attract moisture and support the skin's natural moisturizing factor.
The hydrochloride salt of the essential amino acid lysine, used in cosmetics as a humectant and skin-conditioning agent that also supports collagen production.
Natto gum is polyglutamic acid (PGA) — a biopolymer produced by Bacillus subtilis during the fermentation of soybeans (natto). It has extraordinary water-holding capacity, exceeding even hyaluronic acid. Used in Matsuyama's Hadauru ceramide line for superior moisturization.
An essential aromatic amino acid used in cosmetics as a humectant that contributes to the skin's natural moisturizing factor.
A polysaccharide polymer built from glucuronic acid units; acts as a humectant and film-former, providing hydration and a protective surface layer.
A large humectant that holds water at the skin surface; pairs well with hyaluronic acid.
A cyclic amino acid that functions as a humectant and forms part of the skin's natural moisturizing factor.
A naturally occurring amino acid that functions as a humectant and is a component of the skin's natural moisturizing factor.
The amino acid fraction obtained by hydrolysis of silk fibroin, the structural protein of silk from Bombyx mori silkworm cocoons. Rich in glycine (~46%), serine (~12%), and alanine (~29%). Distinct from 'Hydrolyzed Silk' (which refers to larger peptide fragments), though both are derived from the same source. Absorbs into skin to replenish NMF components and provides a smooth, slightly substantive skin feel.