A conditioning ingredient derived from animal fats that softens hair and reduces static, but may cause irritation or clog pores in sensitive individuals.
Irritation
moderate
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
A conditioning ingredient derived from animal fats that softens hair and reduces static, but may cause irritation or clog pores in sensitive individuals.
Irritation
moderate
Source
semi-synthetic
A traditional foam booster and emulsifier that can be effective but may cause irritation or clog pores in sensitive or acne-prone skin.
Irritation
moderate
Source
semi-synthetic
An effective hair conditioner and antistatic agent, but its animal origin and potential for irritation make it less common in modern clean beauty.
Irritation
moderate
Source
natural
An effective foaming agent from animal-derived tallow, but may be too stripping for dry or sensitive skin.
Irritation
moderate
Source
semi-synthetic
An effective emulsifier that helps mix water and oils, but may be too heavy or potentially irritating for sensitive or acne-prone skin.
Irritation
moderate
Source
semi-synthetic
A gentle emulsifier that helps mix water and oil, but its animal-derived origin may not suit everyone.
Irritation
low
Source
semi-synthetic
A gentle emulsifier that helps mix oil and water in cleansers and creams, but its animal-derived origin may not suit everyone.
Irritation
low
Source
semi-synthetic
A mild, soap-like cleanser that effectively removes dirt and oil without stripping the skin, making it a good choice for sensitive or dry skin types.
Irritation
low
Source
semi-synthetic
A conditioning agent derived from tallow that softens hair and reduces static, but may be too heavy for fine hair or acne-prone skin.
Irritation
moderate
Source
semi-synthetic
Hydrogenated tamanu oil is a stable, non-greasy emollient that helps soften and soothe the skin without the strong scent or staining of raw tamanu oil.
Irritation
low
Source
semi-synthetic
A lightweight, non-greasy synthetic emollient that softens skin and improves product feel with low irritation potential.
Irritation
low
Source
synthetic
A lightweight, non-greasy synthetic emollient that helps products glide on smoothly without clogging pores.
Irritation
low
Source
synthetic
A gentle, plant-derived emollient that helps strengthen the skin barrier and soothe dryness without clogging pores.
Irritation
low
Source
natural
A gentle, plant-derived emollient that softens skin and helps creams feel rich without being greasy.
Irritation
low
Source
semi-synthetic
A gentle, plant-based emollient that softens skin and helps stabilize formulas without clogging pores.
Irritation
low
Source
semi-synthetic
A gentle emulsifier that helps blend oil and water in creams and lotions while also softening the skin.
Irritation
low
Source
semi-synthetic
A safe, plant-derived thickener and emollient that helps lock in moisture but may clog pores for some skin types.
Irritation
low
Source
semi-synthetic
A hydrogenated nut oil that adds richness and slip to formulas, but may be comedogenic for some and is unsuitable for nut-allergic individuals.
Irritation
low
Source
semi-synthetic
A stable, nourishing emollient that helps soften and protect dry skin, but may clog pores for some.
Irritation
low
Source
semi-synthetic
A gentle, non-greasy emollient that strengthens the skin barrier and helps lock in moisture, ideal for dry or sensitive skin.
Irritation
low
Source
natural
A gentle, plant-derived humectant that helps hydrate and smooth skin with low irritation risk.
Irritation
low
Source
natural
Hydrolyzed Acai Fruit is a gentle antioxidant and hydrating ingredient that helps protect skin from environmental stress while supporting a healthy-looking complexion.
Irritation
low
Source
natural
A gentle, vitamin C-rich fruit extract that helps brighten skin and fight free radical damage without the irritation of pure ascorbic acid.
Irritation
low
Source
natural
A gentle, plant-derived humectant that helps attract moisture to the skin, but research on its specific benefits is still limited compared to more established ingredients.
Irritation
low
Source
natural
A gentle, biotech-derived extract that may help calm irritation and support skin hydration, though research is still emerging.
Irritation
low
Source
biotech
A gentle, plant-based antioxidant extract that may help calm skin and defend against environmental stress, though research is still early.
Irritation
low
Source
natural
Hydrolyzed albumen is a gentle protein that helps strengthen hair and temporarily smooth skin by forming a light film.
Irritation
low
Source
natural
A gentle plant extract with antioxidant and soothing potential, though human studies are limited.
Irritation
low
Source
natural
A gentle, hydrating ingredient from algae that plumps skin and supports its moisture barrier without irritation.
Irritation
low
Source
natural
A gentle, seaweed-derived humectant that helps skin hold onto moisture and leaves a light, smoothing film.
Irritation
low
Source
natural
A gentle, processed aloe ingredient that hydrates and calms skin with low irritation risk.
Irritation
low
Source
natural
A gentle, water-soluble aloe derivative that hydrates and calms skin, ideal for sensitive or irritated complexions.
Irritation
low
Source
natural
A gentle, water-loving ingredient that hydrates and soothes skin, especially good for sensitive or irritated types.
Irritation
low
Source
natural
A gentle, plant-derived antioxidant that helps calm skin and fight free radical damage, ideal for sensitive and aging skin.
Irritation
low
Source
natural
A gentle, plant-based protein that helps hair and skin retain moisture and feel stronger without irritation.
Irritation
low
Source
natural
Hydrolyzed Antler Velvet is a novel protein ingredient that may help hydrate and condition skin, but scientific evidence for anti-aging benefits is very limited.
Irritation
low
Source
natural
A novel, protein-rich ingredient with promising anti-aging potential, but human studies are limited and ethical sourcing is a concern.
Irritation
low
Source
natural
A gentle, plant-derived humectant that pulls moisture into the skin and may help calm irritation.
Irritation
low
Source
natural
A gentle, algae-derived ingredient that provides antioxidant protection and light hydration, but its benefits are best supported by general spirulina research rather than specific cosmetic studies.
Irritation
low
Source
natural
A gentle, antioxidant-rich seaweed extract that may help calm skin and protect against environmental stress.
Irritation
low
Source
natural
A gentle, plant-derived protein that helps strengthen hair and lightly moisturize skin without irritation.
Irritation
low
Source
natural
A gentle bamboo-derived extract that helps calm skin and defend against environmental stress, ideal for sensitive or reactive skin types.
Irritation
low
Source
natural
A gentle, plant-derived humectant that helps hydrate and calm the skin, though research on its specific benefits is still limited.
Irritation
low
Source
natural
A gentle, plant-derived humectant that helps hydrate and condition the skin, though research on its specific benefits is still limited.
Irritation
low
Source
natural
A gentle, plant-derived humectant that helps hydrate and calm the skin, with early research suggesting antioxidant benefits.
Irritation
low
Source
natural
A novel protein extract from bee larvae that may help hydrate and condition skin, but research is limited and it's not suitable for vegans or those with bee allergies.
Irritation
low
Source
natural
A gentle, water-soluble beeswax derivative that hydrates and helps maintain the skin barrier without the heavy feel of regular beeswax.
Irritation
low
Source
natural
A gentle antioxidant extract from bilberry leaves that may help protect skin from environmental stress, though human studies are limited.
Irritation
low
Source
natural
A gentle seaweed extract that helps hydrate and calm the skin, with antioxidant benefits from its natural compounds.
Irritation
low
Source
natural
A gentle, protein-rich seaweed derivative that helps hydrate and form a protective film on the skin, but evidence is mostly based on whole seaweed extracts rather than this specific hydrolyzed protein.
Irritation
low
Source
natural
A gentle, water-soluble extract from bottle gourd that helps hydrate and calm the skin, though research is still emerging.
Irritation
low
Source
natural
A gentle, plant-based protein that can temporarily strengthen hair and lightly moisturize skin without irritation.
Irritation
low
Source
natural
A gentle, antioxidant-rich ingredient from cacao seeds that helps hydrate and protect the skin, though research on its topical benefits is still emerging.
Irritation
low
Source
natural
A gentle, plant-derived film former that helps skin feel smooth and hydrated without clogging pores.
Irritation
low
Source
natural
A smaller, salt-linked version of hyaluronic acid that may hydrate deeper layers of skin with lower irritation potential.
Irritation
low
Source
semi-synthetic
A gentle, hydrolyzed version of calendula extract that soothes irritation and supports skin barrier function with low risk of irritation.
Irritation
low
Source
natural
Hydrolyzed calf skin is a protein ingredient that can temporarily plump and smooth skin, but its animal origin and limited evidence for long-term benefits may not suit everyone.
Irritation
low
Source
natural
An animal-derived protein ingredient that may temporarily smooth skin, but lacks strong evidence and raises ethical and sourcing concerns.
Irritation
low
Source
natural
A gentle, plant-derived film-former that helps lock in moisture and smooth the skin's surface.
Irritation
low
Source
natural
A gentle, biotech-derived yeast extract that helps hydrate and soothe the skin, making it a good option for sensitive or dry skin types.
Irritation
low
Source
biotech