A gentle, antioxidant-rich botanical water that adds a subtle herbal note and soothing feel to skincare products.
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, antioxidant-rich botanical water that adds a subtle herbal note and soothing feel to skincare products.
Irritation
low
Source
natural
A gentle, antioxidant-rich plant extract that may help calm skin and fight environmental stress, but research is still early.
Irritation
low
Source
natural
A mild, water-based botanical extract that may help calm skin and provide antioxidant protection, but research is limited.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research on its specific skincare benefits is still limited.
Irritation
low
Source
natural
A natural extract with antioxidant and soothing potential, but may cause irritation in sensitive skin due to its aromatic compounds.
Irritation
moderate
Source
natural
Juniper Wood Oil adds a woody, fresh scent to skincare while offering antioxidant benefits, but it can be irritating for sensitive skin.
Irritation
moderate
Source
natural
A traditional botanical ingredient with antimicrobial and soothing properties, best for oily or blemish-prone skin, but can be irritating for sensitive types.
Irritation
moderate
Source
natural
A gentle, aromatic water from juniper wood that adds a fresh scent and mild purifying feel to skincare products.
Irritation
low
Source
natural
A gentle botanical extract with traditional roots, but modern skincare evidence is still limited.
Irritation
low
Source
natural
A gentle plant extract with antioxidant potential, but research on its cosmetic benefits is still limited.
Irritation
low
Source
natural
A gentle, plant-based powder that may help calm skin and provide antioxidant protection, but research on its cosmetic benefits is still limited.
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, antioxidant-rich fruit extract that may help protect skin from environmental stress, though 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 humans.
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, antioxidant-rich water from black ginger that may help soothe and protect skin, though research is still emerging.
Irritation
low
Source
natural
Kaempferol is a plant-derived antioxidant that helps protect skin from environmental stress and may calm irritation, but human studies are limited.
Irritation
low
Source
natural
A gentle plant antioxidant that may help calm skin and defend against daily pollution, though human studies are still limited.
Irritation
low
Source
natural
A powerful natural antioxidant from the Kakadu plum, rich in vitamin C, that helps brighten skin and protect against environmental damage.
Irritation
low
Source
natural
A gentle, antioxidant-rich plant extract that may help calm skin and protect against environmental stress, though research is still emerging.
Irritation
low
Source
natural
A gentle plant extract with potential soothing and antioxidant benefits, but research on this specific species is limited.
Irritation
low
Source
natural
A gentle, plant-derived extract with antioxidant and soothing potential, though clinical evidence in humans is still limited.
Irritation
low
Source
natural
Kale Leaf Extract is a gentle antioxidant-rich ingredient that helps protect skin from environmental stress while providing soothing benefits.
Irritation
low
Source
natural
Kale powder brings antioxidant and nutrient benefits to skincare, but its effects are mild and best used as part of a broader antioxidant strategy.
Irritation
low
Source
natural
Kale sprout extract is a gentle antioxidant-rich ingredient that helps protect skin from environmental stress and may calm irritation.
Irritation
low
Source
natural
Kallikrein is a skin enzyme that gently exfoliates by breaking down dead skin cells, but its use in cosmetics is still emerging and may cause irritation for sensitive skin.
Irritation
moderate
Source
biotech
Kamala bark extract is a gentle antioxidant from a tropical tree, but research on its skincare benefits is still limited.
Irritation
low
Source
natural
A gentle plant extract with antioxidant potential, but research is limited and it's not a proven powerhouse ingredient.
Irritation
low
Source
natural
A gentle, antioxidant-rich fruit extract that helps protect skin from environmental stress, though research is still emerging.
Irritation
low
Source
natural
A gentle plant extract with antioxidant potential, but research on its specific skin benefits is still limited.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research is limited and it's not a standout ingredient.
Irritation
low
Source
natural
A gentle, plant-based emollient oil that softens skin with a light feel, though research on its unique benefits is still limited.
Irritation
low
Source
natural
A gentle, antioxidant-rich plant extract that may help calm skin and protect against environmental stress, though research is still emerging.
Irritation
low
Source
natural
A gentle, antioxidant-rich flower extract that may help calm skin and protect against environmental stress, though research is still emerging.
Irritation
low
Source
natural
A gentle, antioxidant-rich botanical extract that may help calm skin and protect against environmental stress, though research is still emerging.
Irritation
low
Source
natural
Kanokosou extract is a gentle botanical with potential soothing benefits, but research is limited and it's not a proven powerhouse.
Irritation
low
Source
natural
A gentle botanical powder with antioxidant and soothing potential, best known from traditional Ayurvedic use but with limited modern cosmetic research.
Irritation
low
Source
natural
Licorice root extract is a gentle, research-backed ingredient that helps calm redness and even out skin tone without harsh side effects.
Irritation
low
Source
natural
Kaolin is a mild clay that soaks up surface oil and dirt, making it a go-to for oily or combination skin without over-drying.
Irritation
low
Source
natural
Kaolin is a mild, oil-absorbing clay that helps clarify skin without over-drying, making it a go-to for normal to oily skin types.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research on its specific benefits for skin is still limited.
Irritation
low
Source
natural
Kava Kava Root Extract is a gentle botanical that may help calm irritated skin and provide antioxidant protection, but its use in skincare is less common and requires careful sourcing.
Irritation
low
Source
natural
Kefiran is a gentle, hydrating polysaccharide from kefir that helps skin retain moisture and may support a healthy-looking barrier.
Irritation
low
Source
natural
Antioxidant
Lactobacillus/Wasabia Japonica Root Ferment Extract, Lactobacillus/Punica Granatum Fruit Ferment Extract, Lactobacillus/Saccharum Officinarum (Sugarcane) Ferment Extract, Lactobacillus/Saccharomyces/Xylinum/Black Tea Ferment
A fermented botanical blend that may offer antioxidant and soothing benefits, but research is limited.
Irritation
low
Source
biotech
Keihi Yu is a gentle herbal extract with antioxidant potential, but research on its cosmetic benefits is limited.
Irritation
low
Source
natural
A mineral-rich seaweed extract that hydrates and soothes skin, but its benefits come mostly from its nutrient profile rather than unique active compounds.
Irritation
low
Source
natural
A mineral-rich seaweed juice that hydrates and soothes skin without clogging pores.
Irritation
low
Source
natural
A gentle, hydrating seaweed extract that helps soothe and moisturize skin without clogging pores.
Irritation
low
Source
natural
A gentle, seaweed-derived ingredient that may help hydrate and calm the skin, though research is still emerging.
Irritation
low
Source
natural
A gentle botanical extract with antioxidant potential, but research on its specific skincare benefits is still limited.
Irritation
low
Source
natural
Kephalis is a synthetic peptide that may help smooth wrinkles and support skin firmness, but research is still emerging.
Irritation
low
Source
synthetic
Keratin can temporarily smooth and strengthen hair, but results are not permanent and may not benefit all hair types.
Irritation
low
Source
natural
Hair Conditioning Agent
GELATIN/KERATIN AMINO ACIDS/LYSINE HYDROXYPROPYLTRIMONIUM CHLORIDE
A protein-rich conditioning complex that helps strengthen hair and reduce frizz, but may not suit very fine or low-porosity hair.
Irritation
low
Source
semi-synthetic
A gentle, protein-derived surfactant that cleanses without stripping, making it a good choice for sensitive skin or damaged hair.
Irritation
low
Source
semi-synthetic
Hair conditioning agent
CETEARAMIDOETHYLDIETHONIUM SUCCINOYL HYDROLYZED KERATIN
A modified keratin that helps repair and strengthen hair, but may not suit very fine or low-porosity hair if overused.
Irritation
low
Source
semi-synthetic
Keratinase is a gentle enzyme exfoliant that targets dead skin cells and rough skin without harsh scrubbing.
Irritation
low
Source
biotech
A gentle botanical extract with antioxidant potential, but research on its specific skin benefits is still limited.
Irritation
low
Source
natural
A gentle alpha-keto acid that exfoliates and supports skin renewal with low irritation potential.
Irritation
low
Source
natural
Ketotravoprost is a potent synthetic ingredient that can stimulate eyelash growth but carries risks of eye irritation, darkening of the eyelid skin, and potential changes in eye color.
Irritation
high
Source
synthetic
Kidachi Aloe Extract is a gentle, hydrating botanical that helps calm irritated skin and provides antioxidant protection, making it a great alternative to Aloe vera for sensitive skin.
Irritation
low
Source
natural