A gentle, natural exfoliating powder from wood apple bark, best for those who prefer plant-based physical exfoliants.
Irritation
low
Source
natural
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
A gentle, natural exfoliating powder from wood apple bark, best for those who prefer plant-based physical exfoliants.
Irritation
low
Source
natural
A natural, gritty powder that physically exfoliates skin, but its coarse texture may be too harsh for sensitive or compromised skin.
Irritation
moderate
Source
natural
A gentle, natural wood powder that helps slough off dead skin and absorb excess oil, but lacks strong clinical research.
Irritation
low
Source
natural
Limus is a gentle, seaweed-derived ingredient that may help calm irritated skin and support hydration, though research is still emerging.
Irritation
low
Source
natural
Limus Extract is a gentle botanical antioxidant that may help calm skin and fight free radicals, but research is limited.
Irritation
low
Source
natural
Linalool is a common fragrant component of many essential oils; it can cause skin sensitization in some people, especially when oxidized.
Irritation
moderate
Source
natural
Linalool Dihydroepoxide is a synthetic scent ingredient that can cause skin irritation in sensitive individuals, especially when oxidized.
Irritation
moderate
Source
synthetic
Linalool oxide is a common fragrance ingredient that can cause skin sensitivity in some people, especially when oxidized.
Irritation
moderate
Source
natural
Linalyl acetate is a fragrant ester from lavender and other plants that adds a floral, calming scent to products, but may cause sensitivity in some individuals.
Irritation
low
Source
natural
Linalyl anthranilate is a synthetic fragrance ingredient that adds a floral, fruity scent to products, but it may cause skin irritation or allergic reactions in sensitive individuals.
Irritation
moderate
Source
synthetic
Linalyl Benzoate is a synthetic fragrance ester that adds a pleasant scent to products, but its primary role is aesthetic rather than functional for skin health.
Irritation
low
Source
synthetic
Linalyl butyrate is a synthetic fragrance ingredient that adds a floral, fruity scent to products; it is generally considered safe at low concentrations but may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
Linalyl Cinnamate is a synthetic fragrance ingredient that adds a sweet, floral scent to products but may cause skin irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
Linalyl Formate is a synthetic fragrance ingredient that adds a floral, fruity scent to products; it is generally considered safe at low concentrations but may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
A synthetic fragrance ester that adds a floral, slightly fruity scent to products; generally considered safe at low concentrations but may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
A synthetic fragrance ingredient that adds a floral, lavender-like scent; generally safe at low concentrations but may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
Linalyl isovalerate is a synthetic fragrance ingredient that adds a pleasant scent to products; it is generally considered safe at low concentrations but may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
Linalyl Methyl Ether is a synthetic scent ingredient that adds a fresh, floral note but may cause irritation in sensitive individuals.
Irritation
moderate
Source
synthetic
A synthetic fragrance ester that adds a sweet, floral scent but offers no direct skin benefit.
Irritation
low
Source
synthetic
Linalyl propionate is a synthetic fragrance ingredient that adds a floral, lavender-like scent to products; it is generally considered safe at low concentrations but may cause sensitivity in some individuals.
Irritation
low
Source
synthetic
A gentle, fragrant oil that softens skin and provides antioxidant benefits, but research on its specific effects is limited.
Irritation
low
Source
natural
A gentle, plant-derived ingredient that helps calm irritated skin and provides antioxidant protection without common irritants.
Irritation
low
Source
natural
A gentle, plant-based extract blend that may help calm irritation and defend against environmental stress, though clinical evidence is limited.
Irritation
low
Source
natural
A gentle, plant-based ingredient that helps calm irritated skin and provides antioxidant protection without clogging pores.
Irritation
low
Source
natural
A gentle floral water that can soothe and lightly tone the skin, but its benefits are mostly anecdotal and not backed by strong clinical evidence.
Irritation
low
Source
natural
A gentle, plant-based extract that may help calm irritated skin and provide antioxidant protection, though research is still emerging.
Irritation
low
Source
natural
A gentle botanical 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-based antioxidant extract that may help calm skin and fight environmental stress, though research is still early.
Irritation
low
Source
natural
A gentle, hydrating botanical water that can replace plain water in formulas, offering mild soothing and antioxidant benefits.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research on its skincare benefits is still limited.
Irritation
low
Source
natural
A gentle, antioxidant-rich root extract that may help calm skin and fight free radical damage, though research is still early.
Irritation
low
Source
natural
Lindera twig oil offers a natural, aromatic option for soothing and antioxidant support, but its potency means it should be used in low concentrations to avoid irritation.
Irritation
moderate
Source
natural
Lindera Umbellata Leaf Oil is a natural essential oil that adds a pleasant scent and may offer mild antioxidant benefits, but it carries a moderate risk of skin irritation, especially for sensitive skin.
Irritation
moderate
Source
natural
A gentle, aromatic oil from Japanese spicebush that may offer soothing benefits, but research is limited and it can cause irritation in sensitive individuals.
Irritation
moderate
Source
natural
A rare plant compound with promising antioxidant and anti-inflammatory properties, but currently lacks broad human safety and efficacy data.
Irritation
low
Source
natural
A mild, antioxidant-rich flower extract that may help calm skin and fight free radicals, but research is still limited.
Irritation
low
Source
natural
A gentle, antioxidant-rich fruit extract that helps protect skin from environmental stress and may calm minor irritation.
Irritation
low
Source
natural
Lingonberry fruit juice is a gentle, antioxidant-rich ingredient that helps soothe skin and protect against environmental stress, but it is not a stand-alone treatment for serious skin concerns.
Irritation
low
Source
natural
Lingonberry fruit water is a gentle, antioxidant-rich base that can help soothe and lightly condition skin, but its benefits are mild compared to more concentrated extracts.
Irritation
low
Source
natural
A gentle, plant-derived antioxidant from lingonberry leaf cells that may help protect skin from environmental stress, though research is still emerging.
Irritation
low
Source
biotech
A lightweight, antioxidant-rich oil that helps moisturize and protect the skin without clogging pores.
Irritation
low
Source
natural
Linoleamide is a gentle fatty acid derivative that helps soften and condition skin, but research on its specific benefits is limited compared to its parent compound, linoleic acid.
Irritation
low
Source
semi-synthetic
Linoleamide DEA is a synthetic foam booster and thickener that can improve the lather of cleansers, but it may cause mild irritation for sensitive skin and has raised some safety concerns due to its DEA content.
Irritation
moderate
Source
synthetic
A foam booster and thickener for cleansers, but may be mildly irritating and potentially pore-clogging for some skin types.
Irritation
moderate
Source
semi-synthetic
Linoleamide MIPA is a synthetic surfactant that helps create rich foam in cleansers, but it may be slightly drying for sensitive skin.
Irritation
moderate
Source
synthetic
A synthetic conditioning agent that helps soften hair and reduce static, but may cause irritation for sensitive scalps.
Irritation
moderate
Source
synthetic
A gentle conditioning ingredient that helps detangle hair and soften skin without heavy buildup.
Irritation
low
Source
semi-synthetic
Hair Conditioning Agent
LINOLEAMIDOPROPYL DIMETHYLAMINE DIMER DILINOLEATE
A gentle conditioning ingredient that helps detangle hair and soften skin without heavy buildup.
Irritation
low
Source
semi-synthetic
A gentle conditioning ingredient that makes hair softer and easier to manage without weighing it down.
Irritation
low
Source
semi-synthetic
Antistatic Agent
LINOLEAMIDOPROPYL ETHYLDIMONIUM ETHOSULFATE
A gentle conditioning ingredient that reduces static and softens hair without heavy buildup.
Irritation
low
Source
semi-synthetic
Surfactant
LINOLEAMIDOPROPYL PG-DIMONIUM CHLORIDE PHOSPHATE
A gentle conditioning ingredient that helps reduce static and improve softness in hair and skin products.
Irritation
low
Source
synthetic
Conditioning Agent
LINOLEAMIDOPROPYL PG-DIMONIUM CHLORIDE PHOSPHATE DIMETHICONE
A gentle silicone-conditioner hybrid that smooths hair and softens skin without heavy buildup, but its complex name can be intimidating.
Irritation
low
Source
semi-synthetic
A skin-friendly omega-6 fatty acid that strengthens the moisture barrier and calms dryness without clogging pores.
Irritation
low
Source
natural
Linolenic acid is a gentle omega-3 fatty acid that helps reinforce the skin barrier and soothe dryness without clogging pores.
Irritation
low
Source
natural
A promising antioxidant that pairs fatty acid benefits with polyphenol protection, but research is still early and products are rare.
Irritation
low
Source
semi-synthetic
A gentle, dual-action ester that moisturizes and lightly exfoliates, making it a smart choice for dry or sensitive skin.
Irritation
low
Source
semi-synthetic
A gentle, plant-derived emollient that helps soften and smooth skin with low irritation potential.
Irritation
low
Source
semi-synthetic
A gentle, oil-soluble vitamin C derivative that pairs antioxidant protection with moisturizing fatty acids, though research is still limited.
Irritation
low
Source
semi-synthetic
A lightweight, non-greasy emollient derived from linseed oil that helps soften and smooth skin without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle, water-dispersible emollient that softens skin and helps blend oil and water phases in formulas — generally well-tolerated and non-comedogenic.
Irritation
low
Source
semi-synthetic