Conditioning Agent
Soy Triethoxysilylpropyl Dimonium Chloride
SOY TRIETHOXYSILYLPROPYLDIMONIUM CHLORIDE
A gentle, soy-derived conditioning ingredient that reduces static and softens hair without heavy buildup.
Irritation
low
Source
semi-synthetic
Beauty ingredient research
Browse the review database to understand what an ingredient is, what it does in a beauty formula, when it is useful, and when it deserves caution across skincare, haircare, bodycare, makeup, and more.
20769
Reviewed ingredients
524
Low-concern standouts
2884
Need usage caution
Conditioning Agent
SOY TRIETHOXYSILYLPROPYLDIMONIUM CHLORIDE
A gentle, soy-derived conditioning ingredient that reduces static and softens hair without heavy buildup.
Irritation
low
Source
semi-synthetic
A gentle, plant-derived conditioning ingredient that reduces static and softens hair without heavy buildup.
Irritation
low
Source
semi-synthetic
Soyamide DEA helps create rich lather and thick texture in cleansers, but it may cause mild irritation for sensitive skin and has raised some safety concerns due to potential contamination with DEA-related impurities.
Irritation
moderate
Source
semi-synthetic
A gentle, plant-based surfactant that helps create rich lather and thicken cleansers, but may be less effective in hard water.
Irritation
low
Source
natural
A gentle conditioning ingredient from soy that reduces static and softens hair, but may cause mild irritation in sensitive skin.
Irritation
moderate
Source
semi-synthetic
A gentle, coconut-derived surfactant that cleanses without stripping the skin, making it ideal for sensitive or dry skin types.
Irritation
low
Source
semi-synthetic
A gentle, plant-derived conditioning agent that softens hair and skin without heavy buildup.
Irritation
low
Source
semi-synthetic
A gentle, soy-derived conditioning ingredient that reduces static and improves softness without heavy buildup, suitable for most hair types.
Irritation
low
Source
semi-synthetic
Conditioning Agent
SOYAMIDOETHYLDIMONIUM/TRIMONIUM HYDROXYPROPYL HYDROLYZED WHEAT PROTEIN
A gentle conditioning ingredient derived from wheat protein that helps reduce static and improve softness in hair and skin.
Irritation
low
Source
semi-synthetic
A gentle, plant-derived surfactant that helps create rich foam and improve cleansing without stripping the skin.
Irritation
low
Source
semi-synthetic
Soyamine is a plant-derived emulsifier that helps mix oil and water, but it may be moderately irritating for sensitive skin.
Irritation
moderate
Source
natural
A gentle conditioning agent from soy that helps soften hair and skin, but may cause irritation for sensitive types at higher concentrations.
Irritation
moderate
Source
natural
Soybean extract is a gentle, antioxidant-rich ingredient that helps hydrate and protect the skin, but may not be suitable for those with soy allergies.
Irritation
low
Source
natural
Soybean Lipids are gentle, plant-derived emollients that replenish the skin barrier and provide lasting softness without clogging pores.
Irritation
low
Source
natural
Soybean oil is a gentle, nourishing emollient that helps soften and smooth skin, but it may clog pores for some people.
Irritation
low
Source
natural
A stable antioxidant that combines the benefits of soybean oil and ferulic acid to help protect skin from oxidative stress.
Irritation
low
Source
semi-synthetic
A gentle, semi-synthetic emollient that softens skin without clogging pores, ideal for sensitive and dry skin types.
Irritation
low
Source
semi-synthetic
A gentle emulsifier that helps mix oil and water, but its PEG component raises mild purity concerns for some users.
Irritation
low
Source
semi-synthetic
A gentle, PEG-modified soybean oil that helps mix oil and water in cleansers and lotions, but may raise concerns for those avoiding PEG compounds.
Irritation
low
Source
semi-synthetic
A gentle emulsifier that helps blend oil and water in skincare products, with mild skin-conditioning benefits.
Irritation
low
Source
semi-synthetic
A mild, eco-friendly emulsifier that helps blend water and oil in your skincare products without stripping the skin.
Irritation
low
Source
semi-synthetic
A gentle, semi-synthetic emollient that softens skin without clogging pores, suitable for most skin types.
Irritation
low
Source
semi-synthetic
A gentle, plant-derived ingredient that helps soothe and support the skin barrier without clogging pores.
Irritation
low
Source
natural
A gentle, plant-based ingredient that helps hydrate and soothe the skin, but its benefits are modest compared to more researched actives.
Irritation
low
Source
natural
A gentle antioxidant-rich extract that helps calm skin and fight free radicals, ideal for sensitive or aging skin.
Irritation
low
Source
natural
A gentle, hydrating water from soybeans that also offers antioxidant protection, suitable for most skin types.
Irritation
low
Source
natural
A gentle, antioxidant-rich extract from soybean processing that may help calm and protect the skin.
Irritation
low
Source
natural
Hair Conditioning Agent
Soydimonium Hydroxypropyl Hydrolyzed Wheat Protein
A gentle, positively charged wheat protein that bonds to hair and skin to improve moisture, strength, and feel without heavy buildup.
Irritation
low
Source
semi-synthetic
A gentle, plant-derived conditioning ingredient that helps reduce static and soften hair without heavy buildup.
Irritation
low
Source
semi-synthetic
A gentle, plant-derived conditioning ingredient that helps soften hair and reduce frizz without heavy buildup.
Irritation
low
Source
natural
A gentle, lab-grown botanical extract that may help calm skin and fight free radicals, but research is still early.
Irritation
low
Source
biotech
Spanish Moss Extract is a gentle botanical antioxidant that may help soothe and protect skin, but research is still emerging.
Irritation
low
Source
natural
A gentle herbal extract that may help calm skin and fight free radical damage, but research is still early.
Irritation
low
Source
natural
Spanish Sage Leaf Oil adds a fresh herbal scent and may offer mild antimicrobial benefits, but it can be irritating for sensitive skin.
Irritation
moderate
Source
natural
Spanish Sage Oil offers antimicrobial and soothing benefits but can be irritating for sensitive skin if used undiluted or at high concentrations.
Irritation
moderate
Source
natural
Antioxidant
Sparassis Crispa Mycelium/Usnea Longissima Ferment Extract Filtrate
A fermented mushroom-lichen blend that may offer antioxidant and soothing benefits, but research is still early.
Irritation
low
Source
biotech
A gentle, fermented mushroom extract that may help calm skin and defend against environmental stress, though research is still early.
Irritation
low
Source
natural
A mushroom-derived powder that may help soothe skin and fight oxidative stress, but research is still early.
Irritation
low
Source
natural
A gentle plant extract with antioxidant potential, but research is still early and benefits are not yet proven in human skin.
Irritation
low
Source
natural
A gentle plant extract with antioxidant potential, but research is still early and benefits are not yet proven in human skin.
Irritation
low
Source
natural
Spearmint extract offers a refreshing, soothing feel with mild astringent benefits, but its fragrance components can irritate sensitive skin.
Irritation
moderate
Source
natural
Spearmint Leaf Extract offers gentle soothing and antioxidant benefits, but its effects are mild and best suited for normal to oily skin types.
Irritation
low
Source
natural
Spearmint Leaf Juice offers a gentle, minty refresh for normal to oily skin, but its benefits are mostly anecdotal and it may cause sensitivity in very reactive skin.
Irritation
low
Source
natural
Spearmint Leaf Oil adds a fresh minty scent and mild antimicrobial benefits, but can be irritating for sensitive skin in high concentrations.
Irritation
moderate
Source
natural
Spearmint leaf powder offers gentle astringent and soothing benefits, but its effectiveness in skincare is not well-studied and may vary by formulation.
Irritation
low
Source
natural
Spearmint oil adds a fresh minty scent and mild antimicrobial benefits, but can irritate sensitive skin at high concentrations.
Irritation
moderate
Source
natural
A gentle botanical extract with antioxidant potential, but research on its cosmetic benefits is still limited.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research on its specific skin benefits is still limited.
Irritation
low
Source
natural
Spelt seed water is a gentle, hydrating ingredient that provides antioxidant benefits and helps soothe the skin, making it a good choice for sensitive or dry skin types.
Irritation
low
Source
natural
A sustainable, plant-based wax that helps thicken and stabilize formulas while providing a smooth, non-greasy feel.
Irritation
low
Source
natural
A gentle plant extract with early evidence of soothing and antioxidant benefits, but more research is needed to confirm its efficacy in skincare.
Irritation
low
Source
natural
A gentle botanical extract with soothing and antioxidant potential, best for sensitive or irritated skin, though research is still emerging.
Irritation
low
Source
natural
Spermidine is a promising anti-aging ingredient that encourages skin cell renewal and may help reduce fine lines, but human research is still limited.
Irritation
low
Source
natural
A gentle brown algae extract that may help calm skin and fight free radical damage, but research is still early.
Irritation
low
Source
natural
A gentle, water-loving moss extract that helps hydrate and calm the skin, but research on its specific benefits is still emerging.
Irritation
low
Source
natural
A gentle, natural extract from sphagnum moss that may help calm irritated skin and provide light hydration, but research is still early.
Irritation
low
Source
natural
A skin-identical lipid that strengthens the moisture barrier and calms sensitivity.
Irritation
low
Source
natural
A gentle, probiotic-derived ingredient that may help balance the skin microbiome and strengthen the skin barrier.
Irritation
low
Source
biotech
Sphingolipids are essential building blocks for a healthy skin barrier, helping to lock in moisture and protect against irritation.
Irritation
low
Source
natural
A gentle, biotech-derived ingredient that supports the skin barrier and boosts hydration without irritation.
Irritation
low
Source
biotech