Thickener
HYDROXYETHYL ACRYLATE/SODIUM ACRYLOYLDIMETHYL TAURATE COPOLYMER
4.0
A safe, synthetic thickener that gives lightweight gels and creams a smooth, non-sticky feel.
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Read ingredient review Antistatic Agent
Hydroxyethyl Behenamidopropyl Dimonium Chloride
3.8
A gentle conditioning ingredient that helps detangle hair and reduce static without heavy buildup.
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HYDROXYETHYL CARBOXYMETHYL COCAMIDOPROPYLAMINE
4.0
A gentle, coconut-derived surfactant that helps create a rich lather without stripping the skin.
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HYDROXYETHYL CETEARAMIDOPROPYLDIMONIUM CHLORIDE
3.8
A gentle conditioning ingredient that helps reduce frizz and static in hair while adding softness, with a low risk of irritation.
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Hydroxyethyl Cetyldimonium Phosphate
4.0
A mild, positively charged ingredient that smooths hair and reduces frizz, generally well-tolerated by most skin types.
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HYDROXYETHYL DIETHYLENETRIAMINE DIOLEAMIDE/PALMITAMIDE
3.5
A synthetic conditioning agent that helps detangle hair and soften skin, but offers no long-term repair or deep hydration.
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Read ingredient review Surfactant
Hydroxyethyl Diphenyl Imidazoline
3.5
A mild synthetic surfactant that helps cleanse and reduce static, generally well-tolerated but not a standout ingredient.
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HYDROXYETHYL ERUCAMIDOPROPYL DIMONIUM CHLORIDE
4.0
A gentle conditioning ingredient that reduces static and softens hair without heavy buildup.
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Read ingredient review Viscosity Controlling
Hydroxyethyl Ethylcellulose
4.0
A gentle, plant-derived thickener that improves product texture without clogging pores or irritating skin.
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HYDROXYETHYL ETHYLENE DIPALMITAMIDE
4.0
A synthetic ceramide mimic that supports the skin barrier and locks in moisture without clogging pores.
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Hydroxyethyl Furanhydroxynaphthoquinone
3.5
A synthetic antioxidant that may help protect skin from environmental damage, but research is still emerging.
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Read ingredient review Emulsifier
Hydroxyethyl Glyceryl Oleate/Stearate
4.0
A gentle, plant-derived emulsifier that helps create stable, creamy textures without common irritation concerns.
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Hydroxyethyl Hydroxypropyl C12-15 Alkoxypropylamine Oxide
3.8
A gentle surfactant that helps create rich lather and improve cleansing without stripping the skin.
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HYDROXYETHYL IMIDAZOLIDINONE
3.8
A gentle synthetic humectant that helps hydrate skin without common irritation or clogging concerns.
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Read ingredient review Anti-wrinkle agent
Hydroxyethyl Isobutyl Piperidine Carboxylate
3.8
A synthetic ingredient that works like a gentle topical alternative to injectables for softening expression lines, but results are subtle and temporary.
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Read ingredient review Hair Conditioning Agent
Hydroxyethyl Isostearyloxy Isopropanolamine
3.5
A synthetic conditioning ingredient that helps hair feel soft and smooth, but its benefits are mostly cosmetic and temporary.
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Hydroxyethyl Laurdimonium Chloride
3.8
A gentle conditioning ingredient that helps detangle hair and reduce static without heavy buildup.
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Read ingredient review Anti-aging agent
Hydroxyethyl Methylthiopropenamide
3.8
A synthetic peptide-like ingredient that may help soften expression lines, but research is still limited compared to well-studied peptides.
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Hydroxyethyl Methyltolylamine
3.0
A synthetic pH adjuster that helps stabilize product formulas but has limited direct skin benefit and may cause irritation in sensitive individuals.
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Hydroxyethyl Oleyl Dimonium Chloride
3.8
A synthetic conditioning agent that reduces static and softens hair, but may cause irritation or clog pores in sensitive individuals.
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Read ingredient review Skin conditioning agent
Hydroxyethyl Palmityl Oxyhydroxypropyl Palmitamide
4.3
A synthetic ceramide that mimics natural skin lipids to strengthen the moisture barrier and reduce water loss.
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Read ingredient review Humectant
Hydroxyethyl Pantothenamide MEA
4.0
A gentle, water-soluble derivative of vitamin B5 that helps hydrate and soothe the skin without clogging pores.
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Read ingredient review Film Former
Hydroxyethyl PEI-1000
3.8
A synthetic polymer that helps products spread smoothly and leaves a lightweight, non-sticky film on skin.
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Hydroxyethyl PEI-1500
3.8
A synthetic polymer that helps products spread smoothly and forms a flexible film for hold and feel.
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Read ingredient review Humectant
Hydroxyethyl Phenoxyacetate
3.8
A gentle, multifunctional ingredient that hydrates the skin and helps preserve formulas without the irritation of traditional preservatives.
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Read ingredient review Humectant
Hydroxyethyl Sorbitol
4.0
A gentle, water-attracting humectant that helps keep skin hydrated without irritation, but it's not as well-studied as glycerin or hyaluronic acid.
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Read ingredient review Surfactant
Hydroxyethyl Stearamide-MIPA
3.5
A mild synthetic ingredient that helps create rich lather and a silky after-feel in cleansers, but offers no direct skin benefit.
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Hydroxyethyl Tallowdimonium Chloride
3.5
An effective hair and skin conditioner derived from tallow, but may cause irritation or clog pores in sensitive or acne-prone individuals.
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Read ingredient review Humectant
Hydroxyethyl Urea
4.3
A gentle, effective humectant that hydrates without the stickiness of glycerin or the potential irritation of regular urea.
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Read ingredient review Film Former
HYDROXYETHYL/METHOXYETHYL ACRYLATE COPOLYMER
4.2
A safe, synthetic film-former that helps products stay put and resist water without clogging pores.
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Read ingredient review Surfactant
Hydroxyethylbutylamine Laureth Sulfate
3.5
A synthetic cleansing agent that effectively removes dirt and oil but may be drying or irritating for sensitive skin.
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Read ingredient review Film Former
HYDROXYETHYLCELLULOSE/PHOSPHORYLCHOLINE GLYCOL ACRYLATE COPOLYMER
4.0
A gentle film-forming polymer that leaves skin feeling smooth and hydrated without clogging pores.
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Hydroxyethyldiethonium Polyisobutenyl Triethylaminosuccinate
3.5
A synthetic film-former that helps products stay put and resist water, but offers no active skincare benefit.
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Hydroxyethylpiperazine Ethane Sulfonic Acid
4.0
A gentle pH buffer that keeps your skincare stable and comfortable, but it's not an active treatment ingredient.
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Read ingredient review Antioxidant
Hydroxygenistein
4.0
A gentle antioxidant derived from soy isoflavones that helps defend skin against pollution and UV damage while supporting a more even complexion.
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Read ingredient review Fragrance Ingredient
Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde
2.5
A synthetic fragrance that is a common allergen; many brands have phased it out due to safety regulations.
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Read ingredient review Humectant
Hydroxyisoleucine
4.0
A gentle amino acid that helps hydrate and calm the skin, making it a good choice for sensitive or dry skin types.
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Read ingredient review Solvent
Hydroxylated 2-Octanol
3.5
A mild synthetic solvent that helps dissolve other ingredients and may offer light skin conditioning, but research on its long-term effects is limited.
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Read ingredient review Emollient
HYDROXYLATED JOJOBA OIL
4.0
A stable, non-greasy emollient that mimics the skin's natural oils, ideal for dry or sensitive skin.
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Read ingredient review Emollient
Hydroxylated Lanolin
3.8
A water-friendly version of lanolin that softens skin without the heavy, sticky feel, but may still be problematic for those with wool allergies or acne-prone skin.
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Read ingredient review Emulsifier
Hydroxylated Lecithin
4.3
A gentle, modified lecithin that helps blend water and oil in formulas while supporting skin barrier function.
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Read ingredient review Emollient
Hydroxylated Methyl Soyate Trimethylolpropane Ether
3.8
A gentle, plant-derived emollient that helps products feel silky without clogging pores, but research on its long-term effects is still limited.
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Read ingredient review Emollient
Hydroxylated Milk Glycerides
4.0
A gentle, milk-derived emollient that helps soften and smooth skin with a low risk of irritation.
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Hydroxylauric Acid
4.0
A mild exfoliating acid that helps smooth skin and even tone with a lower irritation risk than stronger AHAs.
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Hydroxylauroyl Phytosphingosine
4.5
A synthetic ceramide that mimics the skin's natural lipids to strengthen the moisture barrier and calm dryness.
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Hydroxylauryl/Hydroxymyristyl Betaine
4.0
A gentle, plant-derived surfactant that cleanses without stripping the skin, making it ideal for sensitive and dry skin types.
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Read ingredient review Sensory Modifier
Hydroxymethoxybenzyl Pelargonamide
3.5
A synthetic ingredient that mimics the warmth of chili pepper without the redness, used to create a pleasant tingling sensation in warming masks and stimulating products.
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Read ingredient review Antioxidant
Hydroxymethoxyphenyl Decanone
4.0
A stable synthetic antioxidant that helps protect skin from environmental damage without common irritation.
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Read ingredient review Preservative
Hydroxymethyl Dioxoazabicyclooctane
3.8
A synthetic preservative booster that helps keep products fresh longer, but is rarely used alone and is best understood as a supporting player in preservation systems.
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Read ingredient review Fragrance Ingredient
HYDROXYMETHYLHEPTYL METHYL KETONE
3.8
A synthetic fragrance ingredient that adds a pleasant scent but offers no skincare benefits; generally safe at low levels but may cause irritation in sensitive individuals.
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HYDROXYMETHYLHEXYL ETHYL KETONE
3.5
A synthetic fragrance ingredient that adds a pleasant floral-citrus scent but offers no skincare benefits and may cause sensitivity in some individuals.
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Read ingredient review Fragrance Ingredient
Hydroxynonanone
3.5
Hydroxynonanone is a synthetic fragrance ingredient with limited research; it appears safe at low concentrations but offers no active skincare benefits.
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Read ingredient review Emollient
Hydroxyoctacosanyl Hydroxystearate
4.0
A gentle, plant-derived wax ester that smooths and softens skin without clogging pores, ideal for sensitive or dry skin types.
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Read ingredient review Barrier Repair
Hydroxypalmitoyl Sphinganine
4.5
A potent ceramide-like ingredient that strengthens the skin barrier and locks in moisture, ideal for dry or sensitive skin.
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Read ingredient review Exfoliant
Hydroxyphenoxy Propionic Acid
4.0
A gentle, plant-based exfoliant that smooths skin and fades dark spots with minimal irritation, ideal for sensitive skin.
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Read ingredient review Antioxidant
Hydroxyphenyl Dihydroxybenzamide
4.0
A synthetic antioxidant that may help brighten skin and fight signs of aging, with early research suggesting it is gentle and effective.
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Hydroxyphenyl Dihydroxyisoindolinone
4.0
A gentle, synthetic brightener that targets hyperpigmentation without the irritation of stronger alternatives.
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Hydroxyphenyl Dimethoxyisoindolinone
4.0
A synthetic antioxidant that helps defend skin from pollution and UV-related damage, with early research suggesting it may also help brighten skin.
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Read ingredient review Soothing Agent
Hydroxyphenyl Glycinamide
4.0
A gentle, lab-made ingredient that helps calm irritated skin and reduce redness without harsh side effects.
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Read ingredient review Antioxidant
HYDROXYPHENYL HYDROXYMETHOXYISOINDOLINONE
4.0
A promising synthetic antioxidant that may help protect skin from pollution and UV damage, but research is still early.
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