Hydrating & Moisturizing Ingredients Explained
Skin hydration and moisturization involve two distinct processes: drawing water into the skin (humectancy) and preventing water from leaving the skin (occlusion). Effective moisturization typically combines both approaches. The third category β emollients β improves the feel and pliability of skin without necessarily driving water retention. Understanding these categories helps explain how different ingredients work and why formulation matters as much as ingredient selection.
Ingredients in Our Database for This Concern
ABIES ALBA CONE EXTRACT
ABIES ALBA CONE EXTRACT
ABIES ALBA CONE EXTRACT is a cosmetic ingredient primarily used for PERFUMING. It is commonly found in various cosmetic formulations and serves important functi...
5-Ureidohydantoin
ALLANTOIN
ALLANTOIN is a cosmetic ingredient primarily used for SKIN CONDITIONING and SOOTHING properties. It promotes skin healing and cell regeneration while providing ...
Ceramides
CERAMIDE
Ceramides are a family of sphingolipid molecules that are the dominant structural component of the stratum corneum lipid matrix, comprising approximately 50% of...
Cetostearyl Alcohol
CETEARYL ALCOHOL
CETEARYL ALCOHOL is a fatty alcohol blend consisting of cetyl alcohol (C16) and stearyl alcohol (C18), typically in a 30:70, 50:50, or 70:30 ratio depending on ...
1-Hexadecanol
CETYL ALCOHOL
CETYL ALCOHOL is a saturated fatty alcohol with a 16-carbon chain (C16H33OH) derived from palmitic acid. Despite being called an 'alcohol,' it is chemically and...
CHOLINE CHLORIDE
CHOLINE CHLORIDE
Choline chloride is the chloride salt of choline, an essential nutrient found naturally in foods. It functions as a humectant and skin conditioning agent in cos...
CYCLOMETHICONE
CYCLOMETHICONE
Cyclomethicone is a mixture of cyclic siloxanes (primarily D4 and D5) used as a lightweight, fast-evaporating silicone in cosmetics. It imparts a smooth, non-gr...
CYCLOTETRASILOXANE
CYCLOTETRASILOXANE
Cyclotetrasiloxane (D4) is a cyclic silicone (octamethylcyclotetrasiloxane) used in cosmetics as a lightweight, fast-evaporating emollient and solvent. The EU r...
HYDROGENATED MINERAL OIL
HYDROGENATED MINERAL OIL
HYDROGENATED MINERAL OIL is a petroleum-derived ingredient produced by catalytic hydrogenation of mineral oil fractions, which saturates residual unsaturated hy...
LANOLINAMIDE DEA
LANOLINAMIDE DEA
Lanolinamide DEA is a lanolin-derived diethanolamide used as an emulsifier and emulsion stabilizer in moisturizers and creams. It combines the skin-conditioning...
MAGNESIUM ASCORBYLBORATE
MAGNESIUM ASCORBYLBORATE
Magnesium ascorbylborate is a synthetic vitamin C derivative that combines ascorbic acid with magnesium and borate to provide greater oxidative stability than p...
MAGNESIUM STEARATE
MAGNESIUM STEARATE
Magnesium stearate is the magnesium salt of stearic acid, used as a lubricant, anticaking, and slip agent in cosmetic powders and pressed products. It is the mo...
Provitamin B5
PANTHENOL
Panthenol (provitamin B5) is the alcohol analog of pantothenic acid that penetrates the skin readily and is enzymatically converted to pantothenic acid, a compo...
PETROLATUM
PETROLATUM
PETROLATUM is a purified semi-solid mixture of hydrocarbons derived from petroleum, used in cosmetics and pharmaceuticals as an occlusive emollient and skin pro...
RADIUM ORE POWDER
RADIUM ORE POWDER
Radium ore powder is a naturally radioactive material derived from radium-containing minerals and is banned in EU cosmetics (Annex II/293). Its historical use i...
RED PETROLATUM
RED PETROLATUM
RED PETROLATUM is a cosmetic ingredient primarily used for MOISTURISING. It is commonly found in various cosmetic formulations and serves important functions in...
SLES
SODIUM LAURETH SULFATE
SODIUM LAURETH SULFATE (SLES) is an anionic surfactant derived from coconut or palm kernel oil through ethoxylation and sulfation. It is widely used as a primar...
Perhydrosqualene
SQUALANE
SQUALANE is a cosmetic ingredient primarily used for EMOLLIENT and SKIN CONDITIONING. It is the fully saturated, stable form of squalene that provides exception...
Squalene
SQUALENE
SQUALENE is a cosmetic ingredient primarily used for EMOLLIENT and ANTIOXIDANT properties. It is a polyunsaturated triterpene with six double bonds that provide...
1-Octadecanol
STEARYL ALCOHOL
STEARYL ALCOHOL is a saturated fatty alcohol with an 18-carbon chain (C18H37OH) derived from stearic acid. Despite the word 'alcohol' in its name, it does not b...
ZINC ASCORBATE
ZINC ASCORBATE
ZINC ASCORBATE is a cosmetic ingredient primarily used for ANTIOXIDANT. It is commonly found in various cosmetic formulations and serves important functions in ...
ZINC ASCORBATE HYDROXIDE
ZINC ASCORBATE HYDROXIDE
ZINC ASCORBATE HYDROXIDE is a cosmetic ingredient primarily used for HAIR CONDITIONING. It is commonly found in various cosmetic formulations and serves importa...
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Frequently Asked Questions
What is the difference between hyaluronic acid and sodium hyaluronate?
Hyaluronic acid is a large polymer molecule that primarily functions at the skin surface, providing a moisture-retaining film. Sodium hyaluronate is the sodium salt of hyaluronic acid with a smaller molecular weight, allowing it to penetrate slightly deeper into the stratum corneum. Both are humectants β they attract and hold water from the environment and deeper skin layers. In practice, many products use a combination of both molecular weights for layered hydration effects.
Is glycerin as effective as hyaluronic acid for hydration?
Glycerin is one of the most-studied and effective humectants available, with a long safety record (CIR assessed as safe; FDA GRAS status). It draws moisture to the skin surface and has occlusive properties at higher concentrations. Clinical studies have shown glycerin can significantly improve skin hydration and barrier function. Hyaluronic acid holds more water per molecule by weight, but glycerin is often used at higher concentrations and has comparable real-world moisturizing performance.
What are ceramides and why do they matter?
Ceramides are lipid molecules that form approximately 50% of the skin's stratum corneum lipid matrix β the structure that holds skin cells together and prevents transepidermal water loss (TEWL). As skin ages, or when barrier function is compromised (as in eczema or very dry skin), ceramide levels decrease. Clinical studies show that topical ceramide-containing formulations can help restore barrier function and reduce TEWL, leading to improved hydration measurements.
Disclaimer
This page is for informational purposes only and does not constitute medical or dermatological advice. Individual skin responses to ingredients vary. Regulation data is sourced from official government databases and may not reflect the most recent updates.